the possibility that experimental results are due to chance, or some factor other than the experimental variable, is measured by the __
The possibility that experimental results are due to chance or some factor other than the experimental variable is measured by the p-value.
The p-value is a statistical measure that provides information about the likelihood of obtaining a particular result due to random chance or some factor other than the experimental variable. In experimental design, a null hypothesis is usually assumed, which states that there is no relationship between the independent and dependent variables. The p-value is then used to assess the strength of evidence against this null hypothesis.
A p-value is calculated based on the data obtained from an experiment and the assumptions of the statistical test used. It is a number between 0 and 1, and it represents the probability of obtaining a result as extreme or more extreme than what was actually observed, given that the null hypothesis is true.
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Find the Area of the figure below, composed of a parallelogram and one semicircle. Rounded to the nearest tenths place
Please see the picture
Test
I only have 10 minutes left
Answer:
Area of the figure= area of the rectangle+ area of the semicircle
=(15×14)+(1/2)π(7)²=210+77=287 square unit
287 square unit is the right answer.
Remember:--- area of the rectangle
=(length×breadth)
and area of the semicircle=π(radius)²/2
Help again lol I’ll give you brainliest
Answer:
8
Step-by-step explanation
All you have to do is how many times it goes up. it goes up 8 times so 8 is your answer
Answer:
21
Step-by-step explanation:
you put all those numbers in in order from least to greatest then you get the smaller number and the biggest number -then you subtract them and you have your answer lollll
46 - 25 = 21
Consider the function f(x) = round(x), which rounds the input, x, to the nearest integer. Is this function one-to-one? Explain or justify your answer.
Answer:
No, it's not a one-to-one function
Step-by-step explanation:
Given
\(f(x) = round(x)\)
Required
Determine if this function is one-to-one
I'll answer this question using the following illustrations;
Assume x = 4.6
\(f(x) = round(x)\) would be
\(f(4.6) = round(4.6)\)
\(f(4.6) = 5\)
Also assume x = 4.8
\(f(x) = round(x)\) would be
\(f(4.8) = round(4.8)\)
\(f(4.8) = 5\)
More generally;
\(4.5 \leq\ x\leq\5.4\)
Would result in:
\(f(x) = 5\)
Since, there's a always a possibility of f(x) having one value for various values of input x, then we can conclude that the function is not a one-to-one function
The function f(x) = round(x) is not one - to - one since different input values of X could yield the same output.
One - to - one functions refers to functions which yield a different output for every input value given. Since, the function rounds input values of x to the nearest integer ;This means that ; some input values of x would produce similar output.For instance :
Given that x = 1.4
f(x) = round(x)
f(1.4) = round(1.4)
Output = 1 ( nearest integer)
Thus output will be the same for all values of x greater than equal to 1 and less than 1.5 (1 ≤ x < 1.5)Since, different input values of X could yield the same the output, then the function is not one - to - one.
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FIND THE nth term of the following
A =7,12,17,20
B=5,9,13,17
Answer:
Tn =4n+1
Step-by-step explanation:
A. T1 = 7 Rule: add 5
T1 = (5×1) +2 =7
T2 = (5×2)+2 = 12
T3 = (5×3)+2 = 17
T4 = (5×4)+2 = 22
B. T1 = 5 Rule : add 4
T1 = (4×1)+1 = 5
T2 = (4×2)+1 = 9
T3 = (4×3)+1 = 13
T4 = (4×4)+1 = 17
Tn = (4×n)+1 = 4n+1
If f(x)=10x+7 and g(x)= x^2-7x, find (f-g)(x).
Answer:
Choice C. \((f-g)(x)=-x^2+17x+7\)
Step-by-step explanation:
Recall that \(f-g\) is defined by
\((f-g)(x)=f(x)-g(x)\)
Therefore we compute
\((f-g)(x)=f(x)-g(x)=10x+7-x^2+7x=-x^2+17x+7\)
Lee is in customer service. How can she best support her internal customer, Dan? O al Prioritize other tasks and customers O b) Ask him a lot of personal questions O c) Give him her full attention when he's speaking O d) Check with him before completing basic tasks
Which two integers is √93 between?
Answer:
between 9 and 10
Step-by-step explanation:
(I also need an explanation)
Answer: 360000
Step-by-step explanation:yes because they want to reach to faster before the others to come and they have lot of feet that they can use
The platoon drank 155 liters of water. How many milliliters did the platoon drink?
Answer:
155000 milliliters of water
Step-by-step explanation:
We Know
The platoon drank 155 liters of water.
How many milliliters did the platoon drink?
1 liter = 1000 milliliters
155 liters = 155 x 1000 = 155000 milliliters of water
So, the platoon drank 155000 milliliters of water.
The platoon drank 155,000 milliliters of water.
1 liter = 1000 milliliters
Therefore, 155 liters = 155,000 milliliters
So, the platoon drank 155,000 milliliters of water.
A point with a coordianates plane (-c -d) is shown on the coordinate grid
Ans The answer to the question is ###404 bad gateway Step-by-step explanation:
Soils
there are different types of soil, each with its own set of characteristics. Soil is made of layers, or horizons. You can dig into the ground to see the soil horizons, much like the picture seen here. When you put the horizons together, from top to bottom, you create a soil profile. A soil profile tells a story about the area and the type of life growing there. Most soils have three major horizons, A, B, C, and some have an organic horizon, O.
O -Humus: Mostly organic matter such as decomposing leaves; is thin in some soils, thick in others, or not present at all.
A -Topsoil: Mostly minerals from parent material with organic matter incorporated; good material for plants to live.
B - Subsoil: Rich in minerals that leached upper layers.
C - Parent material: The deposit at Earth’s surface from which the soil developed.
The illustration is a typical soil profile. How would you expect the soil profile to change in a mountainous region?
a
Horizon O would not be present because plants do not grow on mountains.
b
Horizon C would be much deeper because of the bedrock in the mountain itself.
c
Horizon A would be less deep since there would be less topsoil due to erosion.
d
Horizons O, A, and B would be gone because of high winds.
c) Horizon A would be less deep since there would be less topsoil due to erosion.
how to find soil profile?the soil profile in a mountainous region would typically be different from the one shown in the illustration, because the soil formation process is affected by different factors such as climate, vegetation, topography, and parent material.
In a mountainous region, the soil profile is likely to be thinner and shallower than in flat areas, due to the steep slopes and higher erosion rates. The topsoil horizon (A) may also be thinner or absent in some areas due to erosion or limited plant growth, which can make it difficult for organic matter to accumulate. In addition, the subsoil horizon (B) may be more prominent and closer to the surface due to the leaching of minerals from the upper layers, which can result in a more rocky and mineral-rich soil.
Therefore, the correct answer would be:
c) Horizon A would be less deep since there would be less topsoil due to erosion.
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HELP PLEASE! 66pts!
Solve for x. SHOW WORK!
2^(3x+1)=1/4
The solution of the exponential equation is x = -1
How to find the value of x?
We want to solve the exponential equation:
2^(3x + 1) = 1/4
If we apply the natural logarithm in both sides of that equation, we will get:
ln( 2^(3x + 1) ) = ln( 1/4)
(3x + 1)*ln(2) = ln(1/4)
3x*ln(2) = ln(1/4) - ln(2)
x = (ln(1/4) - ln(2))/(3*ln(2)) = -1
The value of x is -1
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Question:-
The area of two similar triangles are 81 cm2 and 49 cm² respectively. If one of the sides of the first triangle is 6.3 cm, find the corresponding side of the other triangle.
Let's assume that the corresponding side of the second triangle is \(\displaystyle\sf x\).
The ratio of the areas of two similar triangles is equal to the square of the ratio of their corresponding sides. Therefore, we can set up the following proportion:
\(\displaystyle\sf \left( \dfrac{x}{6.3} \right)^{2} =\dfrac{49}{81}\)
To find \(\displaystyle\sf x\), we can solve the proportion above:
\(\displaystyle\sf \left( \dfrac{x}{6.3} \right)^{2} =\dfrac{49}{81}\)
Taking the square root of both sides:
\(\displaystyle\sf \dfrac{x}{6.3} =\sqrt{\dfrac{49}{81}}\)
Simplifying the square root:
\(\displaystyle\sf \dfrac{x}{6.3} =\dfrac{7}{9}\)
Cross-multiplying:
\(\displaystyle\sf 9x = 6.3 \times 7\)
Dividing both sides by 9:
\(\displaystyle\sf x = \dfrac{6.3 \times 7}{9}\)
Calculating the value:
\(\displaystyle\sf x = 4.9\)
Therefore, the corresponding side of the second triangle is \(\displaystyle\sf 4.9 \, cm\).
\(\huge{\mathfrak{\colorbox{black}{\textcolor{lime}{I\:hope\:this\:helps\:!\:\:}}}}\)
♥️ \(\large{\underline{\textcolor{red}{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}\)
Answer:
Step-by-step explanation:
let's assume that the corresponding side of the second triangle is .
The ratio of the areas of two similar triangles is equal to the square of the ratio of their corresponding sides. Therefore, we can set up the following proportion:
To find , we can solve the proportion above:
Taking the square root of both sides:
Simplifying the square root:
Cross-multiplying:
Dividing both sides by 9:
Calculating the value:
Therefore, the corresponding side of the second triangle is 4.9cm
hope it helped u dear...........
Can you help me factor and solve x^2-14x-142=22 ?
Step-by-step explanation:
\( {x}^{2} - 14x = 164\)
\( {x}^{2} - 14x + 49 = 213\)
\((x - 7) {}^{2} = 213\)
\((x - 7) = \sqrt{213} \)
\((x - 7) = - \sqrt{213} \)
\(x = 7 + \sqrt{213} \)
\(x = 7 - \sqrt{213} \)
Again help please help people I believe! ◑﹏◐
Answer:
(1.) 0 (2.) 5.74 (3.) 0.574
You may need to use the appropriate technology to answer this question.
The success of an airline depends heavily on its ability to provide a pleasant customer experience. One dimension of customer service on which airlines compete is on-time arrival. The tables below contains a sample of data from delayed flights showing the number of minutes each delayed flight was late for two different airlines, Company A and Company B.
Company A
34 59 43 30 3
32 42 85 30 48
110 50 10 26 70
52 83 78 27 70
27 90 38 52 76
Company B
45 63 42 32 67
104 45 27 38 84
75 46 32 50 64
41 36 33 65 64
(a)
Formulate the hypotheses that can be used to test for a difference between the population mean minutes late for delayed flights by these two airlines. (Let 1 = population mean minutes late for delayed Company A flights and 2 = population mean minutes late for delayed Company B flights.)
H0: 1 − 2 < 0
Ha: 1 − 2 = 0
H0: 1 − 2 ≤ 0
Ha: 1 − 2 > 0
H0: 1 − 2 ≥ 0
Ha: 1 − 2 < 0
H0: 1 − 2 ≠ 0
Ha: 1 − 2 = 0
H0: 1 − 2 = 0
Ha: 1 − 2 ≠ 0
(b)
What is the sample mean number of minutes late for delayed flights for each of these two airlines?
Company A
min
Company B
min
(c)
Calculate the test statistic. (Round your answer to three decimal places.)
What is the p-value? (Round your answer to four decimal places.)
p-value =
Using a 0.05 level of significance, what is your conclusion?
Do not Reject H0. There is statistical evidence that one airline does better than the other in terms of their population mean delay time.
Reject H0. There is statistical evidence that one airline does better than the other in terms of their population mean delay time.
Do not reject H0. There is no statistical evidence that one airline does better than the other in terms of their population mean delay time.
Reject H0. There is no statistical evidence that one airline does better than the other in terms of their population mean delay time.
The answers are: A)H0: μ1 − μ2 = 0; Ha: μ1 − μ2 ≠ 0
(b) Means: Company A___50.6___ min.; Company B___52.75___ min.
c)The t-value is -0.30107., The p-value is 0 .764815.
What is a Hypothesis?A hypothesis is a testable statement about the relationship between two or more variables or a proposed explanation for some observed phenomenon
A)H0: μ1 − μ2 = 0
i.e there is no difference between the means of delayed flight for two different airlines
Ha: μ1 − μ2 ≠ 0
i.e there is a difference between the means of delayed flight for two different airlines
(b)
Company A___50.6___ min.
Company B___52.75___ min.
Mean of Company A = x`1= ∑x/n =34+ 59+ 43+ 30+ 3+ 32+ 42+ 85+ 30+ 48+ 110+ 50+ 10+ 26+ 70+ 52+ 83+ 78+ 27+ 70+ 27+ 90+ 38+ 52+ 76/25
= 1265/25= 50.6
Mean of Company B = x`2= ∑x/n =
=46+ 63+ 43+ 33+ 65+ 104+ 45+ 27+ 39+ 84+ 75+ 44+ 34+ 51+ 63+ 42+ 34+ 34+ 65+ 64/20
= 1055/20= 52.75
Difference Scores Calculations
Company A
Sample size for Company A= n1= 25
Degrees of freedom for company A= df1 = n1 - 1 = 25 - 1 = 24
Mean for Company A= x`1= 50.6
Total Squared Difference (x-x`1) for Company A= SS1: 16938
s21 = SS1/(n1 - 1) = 16938/(25-1) = 705.75
Company B
Sample size for Company B= n1= 20
Degrees of freedom for company B= df2 = n2 - 1 = 20 - 1 = 19
Mean for Company B= x`2= 52.75
Total Squared Difference (x-x`2) for Company B= SS2=7427.75
s22 = SS2/(n2 - 1) = 7427.75/(20-1) = 390.93
T-value Calculation
Pooled Variance= Sp²
Sp² = ((df1/(df1 + df2)) * s21) + ((df2/(df2 + df2)) * s22)
Sp²= ((24/43) * 705.75) + ((19/43) * 390.93) = 566.65
s2x`1 = s2p/n1 = 566.65/25 = 22.67
s2x`2 = s2p/n2 = 566.65/20 = 28.33
t = (x`1 - x`2)/√(s2x`1 + s2x`2) = -2.15/√51 = -0.3
The t-value is -0.30107.
The total degrees of freedom is = n1+n2- 2= 25+20-2=43
The critical region for two tailed test at significance level ∝ =0.05 is
t(0.025) (43) = t > ±2.017
Since the calculated value of t= -0.30107. does not fall in the critical region t > ±2.017, null hypothesis is not rejected that is there is no difference between the means of delayed flight for two different airlines.
The p-value is 0 .764815. The result is not significant at p < 0.05.
C) Do not reject H0. There is no statistical evidence that one airline does better than the other in terms of their population mean delay time.
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Solve for the height of the building when the distance between the building and a person is 27
meters and the angle of elevation from the person is 49º. Construct a diagram to help you
solve. Round your answer to the nearest meter.
9514 1404 393
Answer:
31 m
Step-by-step explanation:
The relevant trig relation is ...
Tan = Opposite/Adjacent
With reference to the attached diagram, we have ...
tan(49°) = BG/GP
BG = GP×tan(49°) = (27 m)×tan(49°) ≈ 31.0599 m
The height of the building is about 31 meters.
Consider the values shown. What place value must the answer be reported to?
7.273-12.4
1. Ones place
2. Tenths place
3. Hundredth's place
4. Thousandths place
I do not understand what is it asking could someone tell me the answer and then evaluate please
Answer:
2. Tenths place
Step-by-step explanation:
When you're concerned with the precision of a sum, the final value must be rounded to the precision of the least-precise contributor.
PrecisionThe numbers contributing to this sum are ...
7.273, with least significant digit in the thousandth's place.
-12.4, with least significant digit in the tenths place.
The smaller the place value of the least significant digit of a number, the greater the precision it has. The least-precise number will have the largest place value of its least-significant digit.
tenths > thousandths, so -12.4 has less precision
SumFirst of all, we compute the sum as though every contributor were exact. This is especially important when there are more than two contributors. With only two contributors, you get the same result if you round the more precise number first.
7.273 -12.4 = -5.127 . . . . . preferred method of finding the sum
7.3 -12.4 = -5.1 . . . . . . . . . . alternate approach for 2 contributors
Finally, we round that sum to the nearest tenth, reflecting the precision of -12.4:
sum = -5.1
__
Additional comment
As a general rule, this fixation on precision applies to quantities that are measured, estimated, or rounded.
For example, it doesn't make much sense to report a financial value to the penny if one of the contributors has already been rounded to the nearest hundred-thousand dollars. The amount could already be in error by up to $50,000, so precision to the penny is meaningless.
When working many kinds of problems, it can be useful to report answers to the same precision used for the problem values. In some cases, you are told exactly what precision to use for an answer (nearest integer, tenth, or hundredth). Where you are not told, it usually doesn't make much sense to use 6 significant digits for an answer to a problem with values given as one significant digit. However, it can be sensible to report the answer to 2 or 3 significant digits.
__
Here (in this problem), we're concerned with a sum. When you are computing a product or ratio, the rules are different. In those cases, the (least) number of significant digits in the contributors will determine the number of significant digits in the answer. Where mixed arithmetic (products and sums) is involved, the rounding of the final answer will depend on the final operation:
a(b+c) . . . the final operation is multiplication
ab +ac . . . the final operation is addition
As with all computation, the intermediate results should be carried to full calculator precision (unless directed otherwise). Only the final answer should be rounded to the necessary precision.
Place the numbers in order from greatest to least.
-5/2 5.25 1 3/4 -8.345
From greatest to least5.25, 1, 3/4 (or 0.75), -5/2 (or -2.5), -8.345
How to place the numbersTo sort these numbers from largest to smallest, we must establish a consistent format for swift comparison.
Among the various numbers included are whole figures, fractions and decimals, causing us to mix them uniformly first so that they match— in decimals.
-5/2 = -2.5
5.25 = 5.25 (no alteration required)
1 = 1.0 (to simplify analysis, only adding decimal points)
3/4 = 0.75
-8.345 = -8.345 (essentially unchanged)
At this point, we can effortlessly contrast and compare the numbers.
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John can eat a sixth of a pizza in two minutes. It takes 3 minutes for Billy to eat one quarter of the same pizza. If John and Billy start eating one pizza each, who will finish first?
Answer:
They both will finish at the same time.
Step-by-step explanation:
John can finish \(\frac{1}{6}\) of the pizza in 2 minutes.
2 minutes ---> \(\frac{1}{6}\)
1 minutes ---> 0.833
Billy can finish \(\frac{1}{4}\) of the pizza in 3 minutes.
3 minutes ---> 0.25
1 minutes ---> 0.0833
Therefore, they both shall finish at the same time.
Answer:
It takes John and Billy 12 minutes, and they will finish at the same time.Step-by-step explanation:
In one pizza, there are 6 sixths and John will take .
2 × 6 = 12 minutes to finish one pizza
In one pizza, there are 4 quarters and Billy will take .
3 × 4 = 12 minutes to finish one pizza.
It takes each one of them 12 minutes and they will finish at the same time.
Answered by: ms115
What is the slope of the line that passes through points (1,2) and (6, 7)?
\((\stackrel{x_1}{1}~,~\stackrel{y_1}{2})\qquad (\stackrel{x_2}{6}~,~\stackrel{y_2}{7}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{7}-\stackrel{y1}{2}}}{\underset{run} {\underset{x_2}{6}-\underset{x_1}{1}}} \implies \cfrac{ 5 }{ 5 } \implies \text{\LARGE 1}\)
What is the area of this trapezoid?
A=1/2(b1+b2)h
1/2(7+3)(8)
1/2(10)(8)
5*8
=40
what is the vertex to this graph
Answer:
Vertex is (-3,2)
Step-by-step explanation:
The vertex is either the absolute minimum or maximum of a function, depending on how the function opens.
In this case, since this absolute value function opens upward, the vertex is the absolute minimum of the function, which is found at (-3,2).
Therefore, the vertex of the absolute value graph is (-3,2).
Write (x - 5)(x + 5)(2x - 1) in standard form.
-x2 + 2x2 - 50x + 25
2r? - x? - 50x + 25
2x - x2 - 50x
-50x - x? + 2x
Answer:
2x3 - x2 - 50x + 25
Step-by-step explanation:
So the first thing you would do is multiply (x - 5)(x + 5)
x2 + 5x - 5x - 25
then you would simplify
x2 - 25
then you would multiply it by 2x - 1
(x2 - 25)(2x - 1)
2x3 - x2 - 50x + 25
so your answer is
2x3 - x2 - 50x + 25
Solve for x
x^2 - 8x = -3
The solutions for the quadratic equation:
x^2 - 8x = -3
Are:
x = 7.6x = 0.4How to solve the quadratic equation?Here we want to solve the quadratic equation:
x^2 - 8x = -3
First we can move all the terms to the left side so we get:
x^2 - 8x + 3 = 0
Using the quadratic formula (or Bhaskara's formula) we can get the solutions for x as:
\(x = \frac{8 \pm \sqrt{(-8)^2 - 4*¨1*3} }{2*1} \\\\x = \frac{8 \pm 7.2 }{2}\)
Then the two solutions for the quadratic equation are:
x = (8 + 7.2)/2 = 7.6
x = (8 - 7.2)/2 =0.4
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You purchased a rare painting for $150 that is increasing in value by 3% annually. How many years will it take until it is doubled in value? Round to the nearest whole year
Answer:
23 years.
Step-by-step explanation:
It is given that the initial price of painting is $150 and its values increasing by 3% annually.
We need to find how many years will it take until it is doubled in value.
The value of painting after t years is given by
\(y=150(1+0.03)^t\)
\(y=150(1.03)^t\)
The value of painting after double is 300. Substitute y=300.
\(300=150(1.03)^t\)
Divide both sides by 150.
\(2=(1.03)^t\)
Taking log both sides.
\(\log 2=\log (1.03)^t\)
\(\log 2=t\log (1.03)\)
\(t=\dfrac{\log 2}{\log (1.03)}\)
\(t=23.44977\)
\(t\approx 23\)
Therefore, the required number of years is 23.
16 points I need help !!!!!!!!!!!!!!!!!!!!!!!!!!!Which points are plotted correctly on their accompanying number line? Check all that apply.
Point: Negative StartFraction 7 Over 8 EndFractionA number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is 1 mark to the right of negative 1.
Point: Negative one-halfA number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is half-way between 0 and 1.
Point : Negative one-fourthA number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is 2 spaces to the right of negative 1.
Point: Negative one-eighthA number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is 2 spaces to the right of negative 1.
Point: Negative 1 and three-fourths A number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is 2 spaces to the right of negative 1.
Point: Negative 1 and one-fourth A number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A mark is 2 spaces to the left of negative 1.
Answer:
d f i think
Step-by-step explanation:
Answer:
The correct answer is A, D, and F.
Step-by-step explanation:
-7/8, -1/8, and -1 1/4
if you roll a number cube 20 times. which scenario is least likely?
a) you find the experimental probability of rolling a 1 or 2 to be 0.3.
b) you find the experimental probability of rolling a 3 or 4 to be 0.4.
c) you find the experimental probability of rolling a 5 or 6 to be 0.5.
d) you find the experimental probability of rolling a number divisible by 3 to be 0.35
A real-estate agent is paid a monthly salary of $1,250 plus commission. Last month she received a commission of $9,129.75 for selling two houses. One house was priced at $135,850. The other house was priced at $125,000. What is her rate of commission ? What is her total pay for last month ?
Answer:
Last month she received a commission of $9,129.75 for selling two houses. One house was priced at $135,850. The other house was priced at ...
Step-by-step explanation: