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lect the Level at significance 1 g_CVs_p-values port the critica 4: What is (a

lect the Level at significance 1 g_CVs_p-values port the critica 4: What is (a

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Can you please answer just number 6
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 (H) and alternate hypothesis (H,) Question 5: Ho: H1: Follow the examples shown in Clear-Sighted Statistics. You must use the appropriate Greek letters and mathematical symbols. < > > n² | x² = 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, o, 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:
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 (H) and alternate hypothesis (H,) Question 5: Ho: H1: Follow the examples shown in Clear-Sighted Statistics. You must use the appropriate Greek letters and mathematical symbols. < > > n² | x² = 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, o, 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 (µ = 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, µi t-test for the population mean, ji z-test for the population proportion, x 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 Test Right-tail Answer:
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 (µ = 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, µi t-test for the population mean, ji z-test for the population proportion, x 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 Test Right-tail Answer:
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