Darian Silva

2022-04-07

For each of the following examples, state whether the chi-square goodness-of-fit or the chi-square test for independence is appropriate.
15a. An instructor tests whether class attendance (low, high) and grade point average (low, average, high) are independent.
A. goodness of fit test
B. test for independence
15b. An educator tests whether the teacher's speaking style (monotone, dynamic) and student interest (low, high) are independent.
A. goodness of fit test
B. test for independence
15c. A sports psychologist compares the number of athletes with Type A or Type B personality traits.
A. goodness of fit test
B. test for independence
Any help

Quimpoah3b

In this case, we need to use chi-square goodness of fit or the chi-square test for the independence test.
The chi-square goodness of fit test is used to test whether the variable of the distribution come from given distribution or not and the chi-square test for independence test is used test whether the given variables are independent or not.
15a) The test is about independence. Thus, we should use chi-square test for independence test.
15b) The test is about independence. Thus, we should use chi-square test for independence test.
15c) The test whether the variable of the distribution come from given distribution or not. Thus, we should use goodness of fit test.

Alonso Christian