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1. State the null hypothesis and alternative hypothesis in symbols. Use .05 as the alpha. 2. Compute the degrees of freedom. 3. Go to the t table and locate the critical regions.

1. State the null hypothesis and alternative hypothesis in symbols. Use .05 as the alpha. 2. Compute the degrees of freedom. 3. Go to the t table and locate the critical regions.

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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Purpose of Assignment: to demonstrate the ability to test a null hypothesis on two independent groups, construct a confidence interval and report the results. Scenario: a study is conducted on the effects of two medications (Drug A and Drug B) upon anxiety in two groups of participants. Two random samples of participants have been selected for the study - one group receiving Drug A and the other group receiving Drug B. After two weeks, the participants are measured on anxiety with the following results: Drug Drug 72.0 68.7 M 24 18 208 62 In SS Tasks 1. State the null hypothesis and alternative hypothesis in symbols. Use .05 as the alpha. 2. Compute the degrees of freedom. 3. Go to the t table and locate the critical regions. 4. Calculate the pooled variance. 5. Calculate the estimated standard error. 6. Compute the t statistic.
Transcribed Image Text:Purpose of Assignment: to demonstrate the ability to test a null hypothesis on two independent groups, construct a confidence interval and report the results. Scenario: a study is conducted on the effects of two medications (Drug A and Drug B) upon anxiety in two groups of participants. Two random samples of participants have been selected for the study - one group receiving Drug A and the other group receiving Drug B. After two weeks, the participants are measured on anxiety with the following results: Drug Drug 72.0 68.7 M 24 18 208 62 In SS Tasks 1. State the null hypothesis and alternative hypothesis in symbols. Use .05 as the alpha. 2. Compute the degrees of freedom. 3. Go to the t table and locate the critical regions. 4. Calculate the pooled variance. 5. Calculate the estimated standard error. 6. Compute the t statistic.
7. Make a decision (reject the null/fail to reject the null). 8. Compute the 95% confidence interval. 9. Write the results as you would for reporting using the confidence interval for the effect size (not r- squared). (This does not mean provide an interpretation.)
Transcribed Image Text:7. Make a decision (reject the null/fail to reject the null). 8. Compute the 95% confidence interval. 9. Write the results as you would for reporting using the confidence interval for the effect size (not r- squared). (This does not mean provide an interpretation.)
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