Can you do just questions 4-7 please
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Can you do just questions 4-7 please
![Step 2. Select the Level of Significance, a
A 5 percent significance level has been selected. Use the Excel
file Finding_CVs_p-values.xlsx to find the critical value or
values. Report the critical value or values here:
Question 4: What is (are) the critical values(s)?
Answer: -
Step 3. State the null hypothesis (Ho) and alternate
hypothesis (H,)
Question 5:
Ho:
Hj:
Follow the examples shown in Clear-Sighted Statistics. You
must use the appropriate Greek letters and mathematical
symbols.
=
>
<
Step 4. Compose the decision rule using critical values not
p-values. Follow the examples shown in Clear-Sighted
Statistics.
Question 6:
Answer:
Step 5. Calculate the Value of the Test Statistic, p-value,
Effect Size, Post Hoc Statistical Power and the Probability
of a Type II Error
Step 5. Calculate the Value of the Test Statistic, p-value, and
Cohen's d effect size. Interpret the effect size.
Question 6: The population mean, µ, is presumed to be 3.5
days and the population standard deviation, 6, is
unknown. Using Microsoft Excel, find the sample mean (X),
sample standard deviation (s), p-value, Cohen's d effect
size, and complete the appropriate significance test.
Answer (Paste your work from Excel here.):
Value of the Test Statistic =
p-value =
Cohen's d ES =
Interpretation of ES
Step 6: Decide and Report. Your report show cover what
your findings mean, whether the test has practical
significance, and whether the test has sufficient statistical
power or is under or over powered. Do not use the personal
pronoun “I" in your report.
Question 7:
Answer:](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F82a52211-3f63-48c6-b5e1-40041605a894%2Ff2ec799e-bdc4-45d3-85ac-aa2c55b1ca6d%2Frialos_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Step 2. Select the Level of Significance, a
A 5 percent significance level has been selected. Use the Excel
file Finding_CVs_p-values.xlsx to find the critical value or
values. Report the critical value or values here:
Question 4: What is (are) the critical values(s)?
Answer: -
Step 3. State the null hypothesis (Ho) and alternate
hypothesis (H,)
Question 5:
Ho:
Hj:
Follow the examples shown in Clear-Sighted Statistics. You
must use the appropriate Greek letters and mathematical
symbols.
=
>
<
Step 4. Compose the decision rule using critical values not
p-values. Follow the examples shown in Clear-Sighted
Statistics.
Question 6:
Answer:
Step 5. Calculate the Value of the Test Statistic, p-value,
Effect Size, Post Hoc Statistical Power and the Probability
of a Type II Error
Step 5. Calculate the Value of the Test Statistic, p-value, and
Cohen's d effect size. Interpret the effect size.
Question 6: The population mean, µ, is presumed to be 3.5
days and the population standard deviation, 6, is
unknown. Using Microsoft Excel, find the sample mean (X),
sample standard deviation (s), p-value, Cohen's d effect
size, and complete the appropriate significance test.
Answer (Paste your work from Excel here.):
Value of the Test Statistic =
p-value =
Cohen's d ES =
Interpretation of ES
Step 6: Decide and Report. Your report show cover what
your findings mean, whether the test has practical
significance, and whether the test has sufficient statistical
power or is under or over powered. Do not use the personal
pronoun “I" in your report.
Question 7:
Answer:
![Step 1. Test Set-up
Tony V. owns a house painting business in Seattle. Based in his
data, that it takes his crew three-and-a-half days to paint the
interior of a typical house (u = 3.5). He has no estimate of the
population standard deviation, o. He is testing a new paint that
is supposed to dry faster than the paint he has been using for
over thirty years. The new paint is just as good as the old paint
and costs the same. Research Question: Does the new paint
allow Tony to complete a house painting job faster than the
paint he has been using?
Question 1: Sample Size
Cohen's d effect size is estimated at 0.25, which is a small
effect. See the table below:
Cohen's d ES
Thresholds
Small
0.2
Medium
0.5
Large
0.8
Using the Statistics Kingdom sample size calculator run an a
priori statistical power calculation. Will a sample of 100 be
large enough to achieve 80% statistical power. Link:
https://www.statskingdom.com/sample size t z.html.
Will a sample of 35 homes achieve 80% or more statistical
power? Place and X in the appropriation box:
Yes No
Here is the sample of 35 houses Tony painted using the new
paint.:
Days to Paint a House
3.40 3.75 3.33 3.50 3.33
3.50 3.00 3.40 3.50 3.40
3.00 2.85 3.85 3.33 3.33
3.25 3.00 3.50 3.50 3.33
3.33 2.75 3.50 2.75 3.40
3.33 3.50 3.50 0.33 3.40
3.50 3.33 3.50 3.00 3.40
Question 2: What test statistic should you use and why?
Place an X in the correct box. Provide the reason for your
answer below the checklist.
Check
Correct
Test
Test
z-test for the population mean, µ
t-test for the population mean, ji
z-test for the population proportion, a
Answer:
Question 3: Based on the research question is this a
left-tailed, two-tailed, or right-tailed test? Place an X in the
correct box. Provide the reason for your answer below the
checklist.
Check
Correct
Tails
Left-tail
Two-tails
Right-tail
Answer:
Test](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F82a52211-3f63-48c6-b5e1-40041605a894%2Ff2ec799e-bdc4-45d3-85ac-aa2c55b1ca6d%2Fp9zwfpa_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Step 1. Test Set-up
Tony V. owns a house painting business in Seattle. Based in his
data, that it takes his crew three-and-a-half days to paint the
interior of a typical house (u = 3.5). He has no estimate of the
population standard deviation, o. He is testing a new paint that
is supposed to dry faster than the paint he has been using for
over thirty years. The new paint is just as good as the old paint
and costs the same. Research Question: Does the new paint
allow Tony to complete a house painting job faster than the
paint he has been using?
Question 1: Sample Size
Cohen's d effect size is estimated at 0.25, which is a small
effect. See the table below:
Cohen's d ES
Thresholds
Small
0.2
Medium
0.5
Large
0.8
Using the Statistics Kingdom sample size calculator run an a
priori statistical power calculation. Will a sample of 100 be
large enough to achieve 80% statistical power. Link:
https://www.statskingdom.com/sample size t z.html.
Will a sample of 35 homes achieve 80% or more statistical
power? Place and X in the appropriation box:
Yes No
Here is the sample of 35 houses Tony painted using the new
paint.:
Days to Paint a House
3.40 3.75 3.33 3.50 3.33
3.50 3.00 3.40 3.50 3.40
3.00 2.85 3.85 3.33 3.33
3.25 3.00 3.50 3.50 3.33
3.33 2.75 3.50 2.75 3.40
3.33 3.50 3.50 0.33 3.40
3.50 3.33 3.50 3.00 3.40
Question 2: What test statistic should you use and why?
Place an X in the correct box. Provide the reason for your
answer below the checklist.
Check
Correct
Test
Test
z-test for the population mean, µ
t-test for the population mean, ji
z-test for the population proportion, a
Answer:
Question 3: Based on the research question is this a
left-tailed, two-tailed, or right-tailed test? Place an X in the
correct box. Provide the reason for your answer below the
checklist.
Check
Correct
Tails
Left-tail
Two-tails
Right-tail
Answer:
Test
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