Question

You are curious if two types of music, classical or rock, have different effects on the ability of college students to perform a series of mental tasks requiring concentration. You gather two groups of participants and have them perform a series of tasks while listening to music and record the number of errors they make in completing the tasks. Group 1 listens to classical music and Group 2 listens to rock. You believe classical music will have a more calming effect and produce less errors. The data for each group are below. Assuming an alpha level of .05 and standard deviations of 2.07 (Group 1) and 1.97 (Group 2), perform the appropriate t-test for this data set. a. What are your hypotheses? b. What is t-crit? c. What is t-obt? d. What do you conclude?

Classical Rock

3 2

4 4

5 5

1 6

0 2

1

Answer 1