The mean output of a certain type of amplifier is 102 watts with a standard deviation of 12 watts. If 63 amplifiers are sampled, what is the probability that the mean of the sample would differ from the population mean by less than 3.4 watts
Answer:
0.97547
Step-by-step explanation:
Given That:
Mean (m) = 102
Standard deviation (σ) = 12
Sample size (n) = 63
Probability that sample mean would differ from Population mean by less than 3.4 watts
P(m - s < X < m + s)
P(102 - 3.4 < Z < 102 + 3.4)
Using the Z formula :
Zscore = (x - m) / (σ/√n)
x = 102 - 3.4 = 98.6 ; x = 102 + 3.4 = 105.4
Z = (98.6 - 102) / (12/√63) = −2.248888
P(Z < - 2.2488) = 0.012263 (Z probability calculator)
Z = (105.4 - 102) / (12/√63) = 2.2488886
P(Z < 2.2488) = 0.98774 (Z probability calculator)
0.98774 - 0.012263 = 0.97547
Customer pays $0.035 per minute for local calls, if the customer made 60 local calls that all lasted 3 minutes, how much will the customer pay?
The customer will pay $6.30 for the 60 local calls that all lasted 3 minutes.
To find out how much the customer will pay, we need to calculate the total cost for all the local calls.
Step 1: Calculate the total number of minutes for all the calls
Since the customer made 60 local calls and each call lasted 3 minutes, we can multiply 60 by 3 to get the total number of minutes.
60 calls * 3 minutes/call = 180 minutes
Step 2: Calculate the total cost for all the minutes
The customer pays $0.035 per minute for local calls. To find the total cost, we can multiply the total number of minutes by the cost per minute.
180 minutes * $0.035/minute = $6.30
For more such questions on customer
https://brainly.com/question/12831236
#SPJ8
f(t) = p2 + 6r
f(r)
-4
-3
-2
-1
f= p2−10
over −6r2+t
Dividing fractions word problems, please help I need it........
Answer:
25
Step-by-step explanation:
l x w = h
25 x 7.2 = 180
37. Write the numerical coefficient of 3axy.38. Write the number of terms in a trinomial.39. Write xxxyy using exponents.40. Write six less than x as and algebraic expression.41. Write the factors of 3xy
Solution
37. The numerical coefficient of 3axy. The numerical coefficient is simply the number that multiplies the variables. In this case that is 3.
Answer: 3
38. The number of terms in a trinomial
Answer: There are 3 terms in a trinomial
39. Write xxxyy using exponents.
\(\begin{gathered} \text{xxx}=x\times x\times x=x^3 \\ yy=y\times y=y^2 \\ \\ \therefore\text{xxxyy}=x^3y^2 \end{gathered}\)Answer: x³y²
40. Write 6 less than x.
Answer: 6 < x
41. Write the factors of 3xy.
The factors of 3xy are the numbers that when multiplied together, give us 3xy. Thus, the factors of 3xy are:
\(\begin{gathered} 1\times3xy=3xy \\ 3\times xy=3xy \\ 3x\times y=3xy \\ 3y\times x=3xy \\ \\ \text{Thus, the factors are:} \\ 1,3,3x,3y,x,y,xy,3xy \end{gathered}\)Answer: 1, 3, 3x, 3y, x, y, xy, 3xy
write equivalent expressions 3(x-6)
Answer:
3(x-6)=3x-18
Step-by-step explanation:
The Venn diagram below shows the events A and B, and the probabilities p, q and r.
It is known that P(A)=0.43 , P(B)=0.62 and P(A∩B)=0.27 .
Calculate the value of p
Calculate the value of q
Calculate the value of r
Find the value of P (A given NOT B)
The value of q is 0.35.
The value of p is 0.16.
The value of r is 0.27.
The value of P(A given NOT B) is approximately 0.4211.
To calculate the values of p, q, and r, we can use the information provided in the Venn diagram and the probabilities of events A and B.
Given:
P(A) = 0.43
P(B) = 0.62
P(A∩B) = 0.27
Calculating the value of p:
The value of p represents the probability of event A occurring without event B. In the Venn diagram, p corresponds to the region inside A but outside B.
We can calculate p by subtracting the probability of the intersection of A and B from the probability of A:
p = P(A) - P(A∩B)
= 0.43 - 0.27
= 0.16
Therefore, the value of p is 0.16.
Calculating the value of q:
The value of q represents the probability of event B occurring without event A. In the Venn diagram, q corresponds to the region inside B but outside A.
We can calculate q by subtracting the probability of the intersection of A and B from the probability of B:
q = P(B) - P(A∩B)
= 0.62 - 0.27
= 0.35
Therefore, the value of q is 0.35.
Calculating the value of r:
The value of r represents the probability of both event A and event B occurring. In the Venn diagram, r corresponds to the intersection of A and B.
We are given that P(A∩B) = 0.27, so the value of r is 0.27.
Therefore, the value of r is 0.27.
Finding the value of P(A given NOT B):
P(A given NOT B) represents the probability of event A occurring given that event B does not occur. In other words, it represents the probability of A happening when B is not happening.
To calculate this, we need to find the probability of A without B and divide it by the probability of NOT B.
P(A given NOT B) = P(A∩(NOT B)) / P(NOT B)
We can calculate the value of P(A given NOT B) using the provided probabilities:
P(A given NOT B) = P(A) - P(A∩B) / (1 - P(B))
= 0.43 - 0.27 / (1 - 0.62)
= 0.16 / 0.38
≈ 0.4211
Therefore, the value of P(A given NOT B) is approximately 0.4211.
for such more question on value
https://brainly.com/question/27746495
#SPJ8
(a) The area of a rectangular field is 6536 m2.
If the length of the field is 86 m, what is its width?
ANSWER ASPPP PLS
Answer:
Required Answer:-Let
the breadth =x
Length=86mArea=6536m^2As we know that in a rectangle
\({\boxed{\sf Area=lb}}\)
Substitute the values\({:}\longrightarrow\)\(\sf 86\times x=6536\)
\({:}\longrightarrow\)\(\sf 86x=6536 \)
\({:}\longrightarrow\)\(\sf x={\dfrac{6536}{86}}\)
\({:}\longrightarrow\)\(\sf x=76 \)
\(\therefore\)\(Breadth=76m \)
Which rule explains why these triangles are
congruent?
U
T
V
W
AAS
ASA
SAS
SSS
These triangles
cannot be proven
congruent.
These triangles can be proven congruent by using ASA RULE.
What is congruent triangles and its rules ?
When two triangles are congruent, their three sides and their three angles match precisely.
If there is a turn or a flip, the equal sides and angles might not be in the same place, but they are still present.
ASA rule stands for Angle-Side-Angle rule which means two angles and a side of both triangles are equal.
Main Body:
In ΔTUV and ΔTWV
VT =VT ----(1)
∠VTU=∠TVW -----(2)
As TUVW is a parallelogram
so, ∠T = ∠U
hence, ∠TVU =∠VTW ----(3)
taking equation 1, 2,3
therefore, ΔTUV ≅ ΔTWV by ASA rule which means by Angle- Side- Angle rule.
to learn more about congruency click on the link below
https://brainly.com/question/1675117
#SPJ13
three less than the product of six and an unknown number is the same as the product of three and the sum of the number and two
Answer:
6x - 3 = 3(x + 2)
Step-by-step explanation:
how many ft is equal to 1.66m
Answer:
5.44 meters
Step-by-step explanation:
We Know
0.3048 meter = 1 ft
How many ft makes a height of 1.66m?
We Take
1.66 ÷ 0.3048 ≈ 5.44 meters
So, the answer is 5.44 meters.
what is 7/9 divided by 1/3?
Answer:
7/3 or 21/9 or 2.3 repeated
Step-by-step explanation:
Answer: 7/3
Step-by-step explanation
\(\frac{7}{9}/\frac{1}{3} = \frac{7}{9}*\frac{3}{1}= 21/9=7/3\)
Keep change flip. Keep 7/9 change multiply to divide flip 1/3 to 3.
Evaluate the expression: −(8 − 12) + 60 + (−4)2.
Answer: 80
Step-by-step explanation:
⇒ −(8 − 12) + 60 + (−4)²
⇒ -(-4) + 60 + 16
⇒ 4 + 60 + 16
⇒ 80
Two dice are rolled. Find the probability of the following event.
The first die is 5 or the sum is 6.
Answer: 5/18
=============================================
Explanation:
A = number of times we get 5 on the first die
B = number of times we get a sum of 6.
Refer to the sum of dice chart below. This chart represents every possible sum of two dice (eg: 1+1 = 2 in the top left corner or 6+6 = 12 in the bottom right corner).
Let's say the blue die is the first of the pair.
Locate 5 on the blue die and notice there are 6 occurrences when this happens. This corresponds to the 6 other possibilities for the red die. So we have A = 6.
Also notice how there are 5 occurrences of the sum "6" in the table. So B = 5.
We have A+B = 6+5 = 11 occurrences of either the first die is 5 or the sum is 6. However, we have to subtract off 1 because we double counted "6" when adding A and B.
So in reality we have 11-1 = 10 times this happens.
This is out of 36 total ways to roll two dice.
Therefore, the probability we want is 10/36 = 5/18
The probability of the following event. The first die is 5 or the sum is 6 would be 10/36 = 5/18
What is the probability?Probability refers to a possibility that deals with the occurrence of random events.
The probability of all the events occurring need to be 1.
The formula of probability is defined as the ratio of a number of favorable outcomes to the total number of outcomes.
Let's say the blue die is the first of the pair.
A = number of times we get 5 on the first die
B = number of times we get a sum of 6.
Now Locate 5 on the blue die and notice there are 6 occurrences when this happens which corresponds to the 6 other possibilities for the red die. So we have A = 6.
Also,there are 5 occurrences of the sum "6" in the table. So B = 5.
We have A+B = 6+5 = 11 occurrences of either the first die is 5 or the sum is 6.
However, we have to subtract off 1 because we double counted "6" when adding A and B.
So in reality we have 11-1 = 10 times this happens.
This is out of 36 total ways to roll two dice.
Therefore, the probability of the following event.
The first die is 5 or the sum is 6 would be 10/36 = 5/18
Learn more about probability here;
https://brainly.com/question/11234923
#SPJ2
The Life time in hours of a certain aircraft has the normal distribution with mean 80, Standard devation 16. What is the probability that the aircraft Will last 100 hours
1.25 is the probability that the aircraft Will last 100 hours.
What is probability?The area of mathematics described as probability concerns with numerical representations of the likelihood that an event will occur or that an assertion is correct. An event's probability is a number between 0 and 1, where, roughly speaking, 0 indicates the event's impossibility and 1 represents certainty.
Given Data
Mean = 80
Standard deviation = 16
P( x < 100)
P( x < 100) = P( Z< \(\frac{x- mean}{standard deviation}\))
P(x<100 ) = P( Z < \(\frac{100-80}{16}\))
P(x< 100) = P(Z< \(\frac{20}{16}\))
P(x < 100) = 1.25
1.25 is the probability that the aircraft Will last 100 hours.
To learn more about probability, visit:
https://brainly.com/question/11234923
#SPJ9
can someone help answer this and explain how you did it
Answer:
2
Step-by-step explanation:
You want the slope of segment DC given points A, B, C, D are collinear and the rise between B and A is 2 units, while the run is 1 unit.
Slope of a lineThe slope of a line is the same everywhere on the line. It is the same for segment DC as for segment BA on the same line.
slope = rise/run = 2/1 = 2
The slope of DC is 2.
<95141404393>
Thanks for reposting the pertinent question:
Therefore the SLOPE of DC:
DC = 2
Step-by-step explanation: Cheers to the person who has explained and answered the question correctly as well.Make a Plan: FORMULA FOR SLOPE OF A LINE: m = rise/run = y1 - y2 / x2 - x1POINTS: D, C, B, and A are COLLINEAR
Now, We can FIND That:SLOPE of: DC is Equal (=) To the SLOPE of: AB
So, Now, The SLOPE of AB:AB = 2/1 = 2
Now, we conclude that:Therefore the SLOPE of DC:
DC = 2
I hope this helps you!
What is the answer to this combination lock
Answer: 375
Step-by-step explanation:
Ruling out each number:
6: In the first two rows, the 6's placement did not change but the clue did, meaning that it is talking about a different number. Otherwise, it would say it's in the right place twice or in the wrong place twice.
3 & 5: Since we know 6 is already ruled out, both 5 & 3 would have to be correct.
2 & 4 & 8: Is proven wrong in the 4th clue.
7: 7 would have to be in the middle since the second clue says it's in the wrong place. If it was 1, it would say it's in the right space.
1: Is proven wrong after 7 is proven true.
Figuring out placement:
5: For the first clue, it says that it's in the correct place meaning that 5 is the last digit.
3: For both of the times 3 appears, it is in the wrong spot, revealing that it's the first digit.
7: In the second clue, it could either be 1 or 7. However, since 3 took the first spot and 5 took the last spot, 7 would have to be in the middle since the clue says it's in the wrong place. If it was 1, it would say it's in the right space.
In Jan's library, she has 24 informational books. If 15% of the books are informational text, how many total books are in her library?
Answer:
160 books
Step-by-step explanation:
To find the total amount of something, when given the percent and how much value the percent is, use this
\(Total = \frac{Number*100}{Percent}\)
This way we get:
\(Total = \frac{24*100}{15} = \frac{2400}{15} = 160\)
Hope this answer helped! :)
A bird park has black and white birds in the ratio of 8 to 2 as shown below:
What is an equivalent ratio for black birds to white birds? Explain how you arrived at your answer in complete sentences.
Answer:
4:1
Step-by-step explanation:
So, although the ratio 8:2 is technically correct, it is not in its simplest form. To get it into its simplest form you need to find the largest multiplying factor that is the same for both numbers. In this case, 2 is the largest factor because it goes into both 2 and 8. Now, you need to divide the entire ratio by 2 the reach the simplest form, so 8 divided by 2 equals 4, and 2 divided by 2 equals 1. This gives us our final ratio of 4:1.
Please help will mark Brainly
help please ⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️⁉️
Answer:
1 \(\frac{11}{12}\)
Step-by-step explanation:
2\(\frac{1}{4} \\\) - \(\frac{1}{3}\) 1\(\frac{5}{4}-\frac{1}{3}\) \(1+\frac{11}{12}\)1\(\frac{11}{12}\)2x³+4x²+1 for x = 10?
Answer:
2401
Step-by-step explanation:
2x³+4x²+1 x = 10
2(10)³ + 4(10)² + 1
2(1000) + 4(100) + 1
2000 + 400 + 1
2401
Based on the values in the table below, find the slope and y-intercept to write the equation of the line in the form y=mx+b.
x= 1, 2, 3
y= 11, 22, 33
Answer:
y= 11x
Step-by-step explanation:
find the slope: 22-11/2-1= 11/1 or 11
To find the y-intercept you can use the slope by subtracting 11 (inverse operation) from the y value of (1,11). So the y- intercept is (0,0). To write the equation plug in 11 for m and 0 for b. Since 0 has no value the equation would be y= 11x
The number of users on a website is 6300 and is growing exponentially at a rate of
73% per year. Write a function to represent the number of users on the website after t
years, where the daily rate of change can be found from a constant in the function.
Round all coefficients in the function to four decimal places. Also, determine the
percentage rate of change per day, to the nearest hundredth of a percent.
The percentage rate of change per day is approximately 0.1932%.
What is a function?A function has an input and an output.
A function can be one-to-one or onto one.
It simply indicated the relationships between the input and the output.
Example:
f(x) = 2x + 1
f(1) = 2 + 1 = 3
f(2) = 2 x 2 + 1 = 4 + 1 = 5
The outputs of the functions are 3 and 5
The inputs of the function are 1 and 2.
We have,
To represent the number of users on the website after t years, we can use the exponential growth formula:
\(N_t = N_0 \times e^{rt}\)
where \(N_0\) is the initial number of users, r is the growth rate, and t is the time in years.
Given that \(N_0\) = 6300 and the growth rate is 73%, or 0.73, per year,
The function is:
\(N_t = 6300 \times e^{0.73t}\)
To find the percentage rate of change per day, we can use the formula:
\(r = (e^{0.73/365} - 1) \times 100%\)
where 0.73/365 is the daily growth rate.
Solving for r, we get:
\(r = (e^{0.73/365} - 1)\) x 100%
r ≈ 0.1932%
Therefore,
The percentage rate of change per day is approximately 0.1932%.
Learn more about functions here:
https://brainly.com/question/28533782
#SPJ5
The front wall of the storage shed is in the shape of a trapezoid.
The bottom measures 12 feet, the top measures 10 feet, and the height
is 6 feet, find the area of the front wall of the shed.
10ft
bft
12ft
Square Feet
Answer:
66 square feet
Step-by-step explanation:
please review the attachment for a detailed explanation
Find the area of the following figure:
Please answer I’ll give Brainly
Answer:
138 square centimeters
Step-by-step explanation:
You can find the area by splitting up the shape into pieces and adding it all together, and you get 138 square centimeters.
2. Which expression is equivalent to 3(4x + 10 = 2+3)?
Answer: ask ggle it gives you the answer
Step-by-step explanation:
What is the prime factorization of 625?
Answer:
5⁴
Step-by-step explanation:
625= 5×5×5×5
Which is an x-intercept of the graphed function?
O (0,4)
O(-1,0)
O (4, 0)
O (0,-1)
Answer:
(x, y)
(-1,0)
since the rest of the points aren't in the multiple choice well it's (-1,0)
The solution is : the correct option is (B) (-1, 0), is an x-intercept of the graphed function.
Here, we have,
We are given to find the x-intercepts of the graphed function.
We know that
x-intercepts of a function are the points on the X-axis through which the graph of the function is crossing.
From the graph, we see that
the curve is crossing the X-axis at the points (-2, 0) and (-1, 0) .
Therefore, the x-intercept of the given function is (-1, 0).
Option (B) is CORRECT.
To learn more on function click:
brainly.com/question/21145944
#SPJ7
pls help w my khan acc
Answer:
x intercept is (-40,0)
y intercept is (0,15)