A psychology professor decides to conduct a scientific experiment to determine the effects of using a...

A psychology professor decides to conduct a scientific experiment to determine the effects of using a study sheet on test performance among her students. She is interested in finding out if creating a study sheet improves performance on the test. Prior to the start of the semester, the professor randomly assigns 16 students to one of two groups. One group of students is given a direction to create a study sheet over the course of the term and the other group is not. Both groups receive the same course content over the course of the semester. Scores from the test are used as the dependent variable. Below are the scores for the test of students in her class.

Study Sheet: 88, 77, 96. 85, 71, 73, 81, 91

No study sheet: 63, 71, 83, 90, 92, 84, 72, 71

a. Is this an independent samples or related samples design? Why?

b. Write the H0 and H1 in symbols.

c, Calculate the degrees of freedom (df) and the t critical value with a significance level of .05.

d. Use the data and conduct the appropriate test to test the hypothesis that creating a study sheet will improve performance on the test.

e. Report your decision.

f. Interpret your finding.

Expert Solution

orchestra answered 2 years ago

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