Answer:< -3
Step-by-step explanation:
The original position of the groundhog, p, relative to the surface was more than 3 feet below the surface.
What is inequality?Inequality is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are not equal.
Let x be the original position of the groundhog relative to the surface.
The groundhog digs down to a position 2x feet below the surface, and then climbs down an additional 4 feet, so its final position is (2x + 4) feet below the surface.
We are told that this final position is deeper than 10 feet below the surface, so we can set up the inequality:
2x + 4 > 10
Solving for x, we find:
x > 3
Therefore, more than 3 feet below the surface in its starting place was the groundhog, p.
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whats p divided by 3
PLSSS HELP IF YOU TULRY KNOW THISSS
the monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $15. Find the probability that a randomly selected utility bill is (a) less than $68, (b) between $81 and $90, and (c) more than $120.
The probability that a randomly selected utility bill is,
a) P(X < 68) ≈ 0.016 or 1.6%
b) P(81 < X < 90) ≈ 0.1476 or 14.76%
c) P(X > 120) ≈ 0.0912 or 9.12%
To find the probability in each case, we can use the standard normal distribution by converting the given values into z-scores.
a) To find the probability that a randomly selected utility bill is less than $68, we need to find P(X < 68). First, we calculate the z-score using the formula z = (x - μ) / σ, where x is the value, μ is the mean, and σ is the standard deviation.
z = (68 - 100) / 15 = -2.1333
Using a standard normal distribution table or a calculator, we can find the corresponding cumulative probability for z = -2.1333, which is approximately 0.016. Therefore, the probability P(X < 68) is approximately 0.016 or 1.6%.
b) To find the probability that a randomly selected utility bill is between $81 and $90, we need to find P(81 < X < 90). We calculate the z-scores for both values:
z1 = (81 - 100) / 15 = -1.2667
z2 = (90 - 100) / 15 = -0.6667
Using the standard normal distribution table or a calculator, we find the cumulative probability for z1 and z2: P(z1) ≈ 0.1038 and P(z2) ≈ 0.2514. Then, we subtract P(z1) from P(z2) to find the probability between the two values:
P(81 < X < 90) ≈ P(z1 < Z < z2) ≈ P(z2) - P(z1) ≈ 0.2514 - 0.1038 ≈ 0.1476 or 14.76%.
c) To find the probability that a randomly selected utility bill is more than $120, we need to find P(X > 120). We calculate the z-score:
z = (120 - 100) / 15 = 1.3333
Using the standard normal distribution table or a calculator, we find the cumulative probability for z = 1.3333, which is approximately 0.9088. Since we want the probability of X to be greater than 120, we subtract this value from 1:
P(X > 120) ≈ 1 - P(z) ≈ 1 - 0.9088 ≈ 0.0912 or 9.12%.
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Consider a data set {7,10,20,28,35), perform hierarchical clustering using the single linkage and plot the dendogram to visualize it (note you need to do it by hand without using software package).
This gives us a dendrogram with three levels, where the first level has two clusters {{7,10},{20,28}} and {35}, the second level has two clusters {{7,10,20,28},35}, and the third level has only one cluster {{7,10,20,28,35}}.
What is a sequence?
A sequence is an enumerated collection of objects in which repetitions are allowed. Like a set, it contains members (also called elements, or terms).
To perform hierarchical clustering using single linkage, we start by treating each point as its own cluster, and then iteratively merge the two closest clusters until only one cluster remains. We use the single linkage method, which defines the distance between two clusters as the minimum distance between any two points in the clusters.
First, we calculate the pairwise distances between each point:
7 10 20 28 35
7 - 3 13 21 28
10 3 - 10 18 25
20 13 10 - 8 15
28 21 18 8 - 7
35 28 25 15 7 -
Next, we find the two closest points/clusters and merge them:
7,10 20 28 35
7,10 - 10 18 25
20 10 - 8 15
28 18 8 - 7
35 25 15 7 -
The closest points/clusters are 7 and 10, so we merge them to form a new cluster {7,10}.
7,10 20,28 35
7,10 - 18 25
20,28 18 - 7
35 25 7 -
The closest points/clusters are now {20,28} and 35, so we merge them to form a new cluster {{20,28},35}.
7,10 {20,28,35}
7,10 - 7
{20,28,35} 7 -
The closest points/clusters are now {7,10} and {{20,28},35}, so we merge them to form a new cluster {{{7,10},{20,28}},35}.
Hence, This gives us a dendrogram with three levels, where the first level has two clusters {{7,10},{20,28}} and {35}, the second level has two clusters {{7,10,20,28},35}, and the third level has only one cluster {{7,10,20,28,35}}.
The dendrogram can be visualized as in the attached image.
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Select the theorem that proves the triangles congruent. If the triangle cannot be proven congruent, select "not congruent."
Please help! I’ll give brainliest!!
Answer:
c
Step-by-step explanation:
here they give you an angle C≅angle G, then a side DG≅ side CA and then an angle A≅angle D so is the
Angle-Side-Angle theorem or ASA
HELP!
Eric bought 16 ounces of coffee beans for
$14.40. At this rate, how much would 11 ounces
of coffee beans cost?
Answer:
11 ounces cost 9.90$.
Step-by-step explanation:
Each ounce cost .90 cents.
Hope this helped!
The width of a rectangular prism is five less than the length, and the height of the prism is twice the length. Let x
represent the length of the prism.
For what values of x will the volume of the rectangular prism be 500 cubic units or greater?
O x < 8.5 units
O x > 8.5 units
O XS 8.5 units
O x 28.5 units
Simplify . (x ^ 5)/(x ^ 2).
Answer:
\(x {}^{3} \)
Step-by-step explanation:
\(\frac{(x {}^{5} )}{( {x}^{2} )}\)
\(x {}^{3} \)
The Land of Nod lies in the monsoon zone, and has just two seasons, Wet and Dry. The Wet season lasts for 1/3 of the year, and the Dry season for 2/3 of the year. During the Wet season, the probability that it is raining is 3/4; during the Dry season, the probability that it is raining is 1/6. (a) I visit the capital city, Oneirabad, on a random day of the year. What is the probability that it is raining when I arrive? (b) I visit Oneirabad on a random day, and it is raining when I arrive. Given this information, what is the probability that my visit is during the Wet season? (c) I visit Oneirabad on a random day, and it is raining when I arrive. Given this information, what is the probability that it will be raining when I return to Oneirabad in a year's time? (You may assume that in a year's time the season will be the same as today but, given the season, whether or not it is raining is independent of today's weather.)
Answer:
Step-by-step explanation:
(a) To find the probability that it is raining when you arrive in Oneirabad on a random day, we need to use the law of total probability.
Let A be the event that it is raining, and B be the event that it is the Wet season.
P(A) = P(A|B)P(B) + P(A|B')P(B')
Given that the Wet season lasts for 1/3 of the year, we have P(B) = 1/3. The probability that it is raining during the Wet season is 3/4, so P(A|B) = 3/4.
The Dry season lasts for 2/3 of the year, so P(B') = 2/3. The probability that it is raining during the Dry season is 1/6, so P(A|B') = 1/6.
Now we can calculate the probability that it is raining when you arrive:
P(A) = (3/4)(1/3) + (1/6)(2/3)
= 1/4 + 1/9
= 9/36 + 4/36
= 13/36
Therefore, the probability that it is raining when you arrive in Oneirabad on a random day is 13/36.
(b) Given that it is raining when you arrive, we can use Bayes' theorem to calculate the probability that your visit is during the Wet season.
Let C be the event that your visit is during the Wet season.
P(C|A) = (P(A|C)P(C)) / P(A)
We already know that P(A) = 13/36. The probability that it is raining during the Wet season is 3/4, so P(A|C) = 3/4. The Wet season lasts for 1/3 of the year, so P(C) = 1/3.
Now we can calculate the probability that your visit is during the Wet season:
P(C|A) = (3/4)(1/3) / (13/36)
= 1/4 / (13/36)
= 9/52
Therefore, given that it is raining when you arrive, the probability that your visit is during the Wet season is 9/52.
(c) Given that it is raining when you arrive, the probability that it will be raining when you return to Oneirabad in a year's time depends on the season. If you arrived during the Wet season, the probability of rain will be different from if you arrived during the Dry season.
Let D be the event that it is raining when you return.
If you arrived during the Wet season, the probability of rain when you return is the same as the probability of rain during the Wet season, which is 3/4.
If you arrived during the Dry season, the probability of rain when you return is the same as the probability of rain during the Dry season, which is 1/6.
Since the season you arrived in is independent of the weather when you return, we need to consider the probabilities based on the season you arrived.
Let C' be the event that your visit is during the Dry season.
P(D) = P(D|C)P(C) + P(D|C')P(C')
Since P(C) = 1/3 and P(C') = 2/3, we can calculate:
P(D) = (3/4)(1/3) + (1/6)(2/3)
= 1/4 + 1/9
= 9/36 + 4/36
= 13/36
Therefore, the probability that it will be raining when you return to Oneirabad in a year's time, given that it is raining when you arrive, is 13/36.
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Can someone please explain the math on this one to me? Thanks!
Assume that is takes an average of 3 man-hours to stack 1 ton of a particular item. In order to stack 36 tons in 6 hours, the number of people required is _____
Answer:
18 men = 36 tons in 6 hours
Step-by-step explanation:
3 men = 1 ton in 1 hour
6 men = 2 ton in 1 hour
9 men = 3 tons in 1 hour
with this you find a pattern
3 men = 2 tons in 2 hours
3 men = 3 tons in 3 hours
3 men = 6 tons in 6 hours
6 men = 12 tons in 6 hours
9 men = 18 tons in 6 hours
12 men = 24 tons in 6 hours
15 men = 30 tons in 6 hours
18 men = 36 tons in 6 hours
(This is how i worked it out)
Answer:
18 people
Step-by-step explanation:
Method A:
3 man-hours to stack 1 ton
36 tons is 36 times 1 ton, so it takes 36 times as long to stack.
36 * 3 man-hours to stack 36 * 1 ton, or
108 man-hours to stack 36 tons
To do the job in 6 hours instead of 108, you need to do 108/6 = 18 times as much work per hour, so you need 18 times as many people.
18 * 1 person = 18 people
Answer: 18 people
Method B:
1 person works 3 hours and stacks 1 ton. That same person works another 3 hours and stacks another ton. In a total of 6 hours, 1 person stacked 2 tons. Since you need 36 tons stacked in the same 6 hours, and 36 = 18 * 2, you need 18 times the number of people, so you need 18 people.
A test is administered with 15 questions. Students are allowed to answer any ten. How many different choices of ten questions are there?
150
250
3000
3003
Answer:
3003
Step-by-step explanation:
This is a combination since the order doesn't matter
15 C 10
The formula
15!
-------
10! (15-10)!
15*14*13*12*11
--------------------
5*4*3*2*1
3003
Pls HELP ASAP WILL GIVE BRAINLIEST AND 100 POINTS
Picture one
Name of a LINE SEGMENT. (Select all that apply)
a. bc
b. fd
c. dj
d. ga
e. gh
f. df
Picture two
Which names are correct for pm?
(SELECT ALL THAT APPLY)
a. tm
b. mp
c. pt
d. py
Picture 3
Name of OPPOSITE RAYS. (Select all that apply)
a. hg and ge
b. da and dj
c. fd and fb
d. ai and aj
e. da and aj
Picture 4
Which names are correct for yp?(SELECT ALL THAT APPLY)
a. dt
b. pt
c. ha
d. ydtp
e. py
Picture 5
Name of a RAY. (Select all that apply)
a. be
b. gh
c. fd
d. ab
e. ae
The answers are
picture 1 : all the options
Picture 2: option b
picture 3: option d
picture 4: option e
picture 5: option A, B and E
What is line segment?A line segment refer to a lime that has known definite ends. This is used most times to represent shapes of definite lengths. such that the length of the line corresponds to the length of the shape the line segment represents
The answer is all the options
Which names are correct for pm?the line segment pm is equal to mp hence the answer is mp - option b
Name of OPPOSITE RAYS?A ray is a line with arrow head pointing to a particular direction.
The correct option is option d
Which names are correct for yp?line yp is equal in length to py therefore the answer is py
The correct option is option e
Name of a RAY?A ray is a line with arrow head pointing to a particular direction
The correct options are option A, B and E
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let x represent the difference between the number of heads and the number of tails when a coin is tossed 50 times. then p(x)=12.
Based on the information given, we can assume that when a coin is tossed 50 times, the difference between the number of heads and the number of tails is x. Additionally, we are told that the probability function p(x) is equal to 12.
To understand this better, we need to consider the probability of getting different values of x.
For example, if we get 25 heads and 25 tails, then x is equal to 0. If we get 30 heads and 20 tails, then x is equal to 10.
If we get 20 heads and 30 tails, then x is equal to -10.
Since we are told that p(x) is equal to 12, we can assume that the probability of getting any value of x is 12%. This means that the probability of getting x = 0, x = 10, or x = -10 is all 12%.
To find out the actual number of times we can expect to get each value of x, we need to use the binomial distribution formula.
This formula takes into account the number of trials (in this case, 50 coin tosses), the probability of success (getting heads), and the value of x.
Overall, the information given tells us that we can expect to get a difference of 10 more heads than tails or 10 more tails than heads about 12% of the time when tossing a coin 50 times.
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Ms. colonial has just taken out a $150,000 mortgage at an interest rate of 6% per year. if the mortgage calls for equal monthly payments for twenty years, what is the amount of each payment? (assume monthly compounding or discounting.)
To calculate the amount of each monthly payment for a $150,000 mortgage at an interest rate of 6% per year with equal payments for twenty years, use the formula for the monthly payment on a mortgage.
The formula is: P = (r * PV) / (1 - (1 + r)^(-n))
Where: P = Monthly payment
r = Monthly interest rate (annual interest rate divided by 12)
PV = Present value or loan amount
n = Total number of payments (number of years multiplied by 12)
Let's calculate the monthly payment: PV = $150,000
r = 6% / 12 = 0.005 (monthly interest rate)
n = 20 years * 12 = 240 months
P = (0.005 * 150,000) / (1 - (1 + 0.005)^(-240))
P = (750) / (1 - (1.005)^(-240))
P ≈ $1,109.02
Therefore, the amount of each monthly payment for this mortgage would be approximately $1,109.02.
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26. a)prove that a strictly increasing function from r to itself is one-to-one. b)give an example of an increasing function from r to itself that is not one-to-one.
a) f is strictly increasing function then f is one to one
b) f: R-> R such that f(x) = x^n where n is even is not one to one
suppose that f is strictly increasing function
we have to prove that f is one to one
let us assume f(x1) = f(x2)
we have to prove x1=x2
since f is strictly increasing function
then x2>x1 and x1> x2
this implies that x1=x2
and Hence f is one to one function
b) f:R->R such that f(x) = x^ n where n is even is not one to one
because f(1)= f( -1)
but -1 is not equal to 1 therefore f is not one to one function
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A line has a slope of -2 and passes through the point (6,-16). Write its equation in slope intercept form.
Step-by-step explanation:
since we have the slope and a point, let's start with the point-slope form first, and then we transform it into the slope-intercept form.
the general slope-intercept form is
y = ax + b
"a" being the slope and b the y-intercept (the y-value when x = 0).
the general point-slope form is
y - y1 = a(x - x1)
"a" is again the slope, (x1, y1) is a point on the line.
so, in our case
y - -16 = -2(x - 6)
y + 16 = -2x + 12
y = -2x - 4
that's it.
40% of 48 is what number
Answer:
19.2
What is 40 percent (calculated percentage %) of number 48? Answer: 19.2.
Step-by-step explanation:
Answer:
19.2
Step-by-step explanation:
40/100=0.4
0.4 *48=19.2
Can someone pls help me out on these geometry questions? Just fill in the blanks, ASAP pls
Question 5
1) Given
2) Definition of congruent segments
3) Reflexive property of equality
4) Addition property of equality
5) Substitution
6) Commutative property of addition
7) Segment addition postulate
8) Substitution
9) Segments with equal measure are congruent
Question 6
1) Given
3) Segment addition postulate
4) Substitution
5) Subtraction property of equality
7) SSS
Find the demand function for the marginal revenue function. recall that if no items are sold, the revenue is 0.
R′(x)=0.06x2−0.05x+138
The required demand function for the marginal revenue function is P = 0.02x² - 0.025x.
What is demand function for the marginal revenue function?Marginal Revenue is the revenue that is gained from the sale of an additional unit. It is the revenue that a company can generate for each additional unit sold; there is a marginal cost attached to it, which must be accounted for.
According to question:The marginal revenue function, find the demand capability is P = 0.02x² - 0.025x + 138 when R'(x) = 0.06x² - 0.05x + 138 .
Considering that,
We need to find for the peripheral income capability, find the interest capability.
Recollect that the pay is zero assuming no things are sold:
R'(x) = 0.06x² - 0.05x + 138
p(x) is what.
That's what we know,
MR = dTR/dx = 0.06x² - 0.05x + 138
Incorporating the marginal revenue function , we get complete income capability,
MR = TR
= (0.06x²⁺¹)/(2+1) - (0.05x¹⁺¹)/(1+1) + 138x
= (0.06x³)/3 - (0.05x²)/2 + 138 x
TR = 0.02 x³ - 0.025 x² + 138 x
TR = (P)(Q) = (P)(x) = 0.02 x³ - 0.025 x² + 138 x
P = ( 0.02 x³ - 0.025 x² + 138 x)/x
P = 0.02x² - 0.025x + 138
In this manner, The marginal revenue function, find the interest capability is P = 0.02x² - 0.025x + 138 when R'(x) = 0.06x² - 0.05x + 138 .
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is a triangle. is perpendicular to . cm, cm, cm work out the area of triangle . give your answer in the form where is an integer. (5 marks)
The hypotenuse is cm and the two other sides are cm and cm. The area of the triangle is (cm²) / 2.
To work out the area of a triangle, we can use the formula:
area = (base x height) / 2.
Given that one side of the triangle is perpendicular to the base and measures cm,
we can consider this as the height of the triangle.
Let's label the base as b and the height as h.
From the given information, we know that the base of the triangle is cm. So, b = cm.
To find the height, we need to use the Pythagorean theorem.
The Pythagorean theorem states that in a right-angled triangle, the square of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides.
In this case, the hypotenuse is cm and the two other sides are cm and cm.
Applying the Pythagorean theorem, we have: cm² = cm² + cm².
Simplifying the equation, we get: cm² = cm².
Now, we can solve for cm: cm² - cm² = 0.
Therefore, cm = cm.
Now, we have the base (b = cm) and
the height (h = cm). Plugging these values into the formula, we have:
Area = (base x height) / 2 = (cm x cm) / 2.
Simplifying further, we get:
Area = (cm²) / 2.
As we need to give our answer in the form where A is an integer.
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The complete question is,
________is a triangle. is perpendicular to . cm, cm, cm work out the area of triangle . give your answer in the form where is an integer.
First correct answer gets brainliest! All guesses will be reported. Tysm!!
Answer:
90 in
Step-by-step explanation:
360/60 = 6
15*6 = 90
What is y=4(a)+b
When a=7 and b=2
What is a and b
Answer: You have awnsered a & b, but when you fill out the equation, you get y=30.
Step-by-step explanation:
* y= 4(7) + 2
* y= 28 + 2
* y= 30
Use Green's Theorem to evaluate $ F. dr for the given vector field F and positively oriented simple closed curve C. (a) F(x, y) = yi – xj; C is the circle x2 + y2 = (b) F(x, y) = xạeyi+y_e
(a) \($\frac{\partial Q}{\partial x}\)\(-\)\(\frac{\partial P}{\partial y} = 0$\), and the line integral of \($F.dr$\) around any closed curve is zero.
(b) \($\oint_C F.dr = ab\int_{0}^{2\pi} (\cos^2 t - \sin^2 t)e^{b\sin t} dt$\)cannot evaluate the line integral of F.dr around the given closed curve using Green
How to use Green's Theorem to evaluate F. dr for the given vector field F(x, y) = yi – xj?(a) We want to use Green's theorem to evaluate the line integral of F.dr around the circle \($x^2 + y^2 = a^2$.\)
Green's theorem states that:
\($\oint_C F.dr = \iint_R (\frac{\partial Q}{\partial x} - \frac{\partial P}{\partial y}) dA$\)
where \($F = P\hat{i} + Q\hat{j}$\) is a vector field,\($C$\) is a closed curve in the plane, and \($R$\) is the region bounded by\($C$\).
In this case, we have:
\($F = y\hat{i} - x\hat{j}$\)
\($P = 0$\)and\($Q = y$\)
\($\frac{\partial Q}{\partial x}\) = 0 and \($\frac{\partial P}{\partial y} = 0$\)
Therefore, \($\frac{\partial Q}{\partial x}\)\(-\)\(\frac{\partial P}{\partial y} = 0$\), and the line integral of \($F.dr$\) around any closed curve is zero.
How to use Green's Theorem to evaluate F. dr for the given vector field F(x, y) = xạeyi+\(y_e\)?(b) We want to use Green's theorem to evaluate the line integral of\($F.dr$\)around the closed curve C defined by\($x = a\cos t$, $y = b\sin t$, $0 \leq t \leq 2\pi$.\)
Green's theorem states that:
\($\oint_C F.dr = \iint_R (\frac{\partial Q}{\partial x} - \frac{\partial P}{\partial y}) dA$\)
where \($F = P\hat{i} + Q\hat{j}$\) is a vector field, C is a closed curve in the plane, and R is the region bounded by C.
In this case, we have:
\($F = xe^{y}\hat{i} + (ye^{y} + e^{y})\hat{j}$\)
\($P = xe^{y}$\)and \($Q = ye^{y} + e^{y}$\)
\($\frac{\partial Q}{\partial x}\)= 0 and \($\frac{\partial P}{\partial y} = xe^{y} + e^{y}$\)
Therefore,
\($\frac{\partial Q}{\partial x} - \frac{\partial P}{\partial y} = -xe^{y}$\)
The region R enclosed by C is an ellipse with semi-axes a and b, and its area is given by\($A = \pi ab$\). Using polar coordinates, we have:
\($x = a\cos t$\)
\($y = b\sin t$\)
\($\frac{\partial x}{\partial t} = -a\sin t$\)
\($\frac{\partial y}{\partial t} = b\cos t$\)
\($dA = \frac{\partial x}{\partial t} \frac{\partial y}{\partial t} dt = -ab\sin t \cos t dt$\)
Thus, we have:
\($\oint_C F.dr = \iint_R (\frac{\partial Q}{\partial x} - \frac{\partial P}{\partial y}) dA = \int_{0}^{2\pi} \int_{0}^{ab} (-xe^{y}) (-ab\sin t \cos t) drdt$\)
\($= ab\int_{0}^{2\pi} (\cos^2 t - \sin^2 t)e^{b\sin t} dt$\)
This integral does not have a closed-form solution, so we need to use numerical methods to approximate its value.
Therefore, we cannot evaluate the line integral of F.dr around the given closed curve using Green
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a small town in the UK has only 600 high school students. what is the largest possible sample you can take from this town and still be able to calculate the standard deviation of the sampling distribution of p-hat?
To calculate the standard deviation of the sampling distribution of p-hat, the answer will be 59 students.
By calculating,
600/10=60 and 59 students which is less than 10% of the population.
A sampling distribution, also known as a finite-sample distribution, in statistics is the probability distribution of a given random-sample-based statistic. The sampling distribution is the probability distribution of the values that the statistic takes on if an arbitrarily large number of samples, each involving multiple observations (data points), were used separately to compute one value of a statistic (such as, for example, the sample mean or sample variance) for each sample. Although only one sample is frequently observed, the theoretical sampling distribution can be determined.
Because they offer a significant simplification before drawing conclusions using statistics, sampling distributions are crucial in the field. They enable analytical decisions to be made based on the probability distribution of a statistic rather than the combined probability distribution of all the individual sample values
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10 apples, 4 of which are rotten, are in the refrigerator. 3 apples are randomly selected without replacement. Let the random variable x represent the number chosen that are rotten. What is the mean and standard deviation of x?
The mean of the random variable x, which represents the number of rotten apples chosen, is 1.2, and the standard deviation is approximately 0.979.
What is standard deviation?
Standard deviation is a statistical measure that quantifies the dispersion or variability of a dataset. It indicates how much individual data points differ from the mean value. A larger standard deviation suggests greater diversity, while a smaller value indicates less variability within the dataset.
To calculate the mean, we multiply the probability of selecting a rotten apple (4/10) by the total number of apples chosen (3). Mean = (4/10) * 3 = 1.2.
To calculate the standard deviation, we need to find the variance first. The variance is the sum of the probabilities of each possible outcome multiplied by the square of the difference between that outcome and the mean.
The possible outcomes are 0, 1, 2, or 3 rotten apples chosen. The probabilities for each outcome are:
P(x=0) = (6/10) * (5/9) * (4/8) = 0.3333
P(x=1) = (4/10) * (6/9) * (5/8) = 0.3333
P(x=2) = (4/10) * (3/9) * (6/8) = 0.2000
P(x=3) = (4/10) * (3/9) * (2/8) = 0.0667
Now, we calculate the variance:
Variance = (0² * 0.3333) + (1² * 0.3333) + (2² * 0.2000) + (3² * 0.0667) - mean²
= (0 * 0.3333) + (1 * 0.3333) + (4 * 0.2000) + (9 * 0.0667) - 1.2^2
= 0.6666 + 0.3333 + 0.8000 + 0.6003 - 1.44
= 1.4 - 1.44
= -0.04
Finally, the standard deviation is the square root of the variance:
Standard deviation = sqrt(-0.04) = approximately 0.979
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Which of these is a random sampling technique which is frequently chosen by researchers for its simplicity and its periodic quality?
Simple random sampling is a frequently chosen for its simplicity and periodicity.
What is frequently ?
Frequently refers to something that happens or occurs often or many times. It is an adverb that describes the regularity of an action or event, indicating that it happens with a high frequency or on a regular basis.
Simple random sampling is a random sampling technique that is frequently chosen by researchers for its simplicity and its periodic quality. This technique involves randomly selecting a sample from a larger population, with each individual in the population having an equal chance of being selected. Simple random sampling is considered to be an unbiased and efficient method for selecting a representative sample, and it is often used as a benchmark for comparing other sampling methods.
Simple random sampling is a frequently chosen for its simplicity and periodicity.
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MATH GIVING OUT BRAINLY TO CORRECT ANSWER
Answer:
C
Step-by-step explanation:
Fractions cant be integers
Write an equation of the line passing through the point $A\left(-6,\ 5\right)$ that is parallel to the line $y\ =\ \frac{1}{2\ }x-7$
.
The equation of the line through the point (-6,5) and parallel to the line is y=\(\frac{1}{2}\)x-7 is y=\(\frac{1}{2}\)x+8.
What is equation of line ?
Any location with an x and y axis can have a line equation constructed using the slope of the line. To build a line with a certain point, one uses the equation for a straight line. Any two points can be used to find the slope. Slope is the part of a straight line that is steep.
Here the given equation is y=\(\frac{1}{2}\)x-7
We know that equation of line is y=mx+c , where m = slope.
Then slope of given line is m= 1/2 . Now the line is parallel to given line so slope of the equation is also equal.
=> slope m=1/2.
Now the given point \((x_1,y_1)=(-6,5)\) .
Using equation of the line is ,
=> \(y-y_1=m(x-x_1)\)
=> y-5 = 1/2(x+6)
=> 2y-10=x+6
=>2y=x+16
=>y=\(\frac{1}{2}\)x+8
Hence the equation of the line is y=\(\frac{1}{2}\)x+8.
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I'm not good at time questions can someone help me?
Randy should begin his homework by 07:10 in order to sleep by 10:00
How to determine the time to start the homework?The given parameters are:
Social studies = 45 minutesScience = 40 minutesMath = 1 hour and 15 minutesBed preparation = 10 minutesIf the above activities are done, the time spent would be:
Time = 45 minutes + 40 minutes + 1 hour and 15 minutes + 10 minutes
Add the time
Time = 2 hour and 50 minutes
He wants to go to bed by 10:00.
So, the time to begin his homework is:
Begin = 10:00 - 2 hour and 50 minutes
Evaluate the difference
Begin = 07:10
Hence, Randy should begin his homework by 07:10
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Simplify this exponential expression:
(-49) 2/5
I give Brainliest
Answer:
I thank it is 12 4/5
Step-by-step explanation:
hope this helps if not please let me now and dont worry about brainliest my main focus is just helping people.