A professor wonders if the number of hours students spend studying during the week before final exams

Question:

A professor wonders if the number of hours students spend studying during the week before final exams is a function of their GPAs until that point. Ten students in four separate GPA brackets report the amount of time they spend studying during the final week of the semester. The GPA brackets are 2.0 to 2.5, 2.5 to 3.0, 3.0 to 3.5, and 3.5 to 4.0. Study time (in hours) during the week before final exams for the 10 students in each GPA bracket is listed below:

a. What are the independent and dependent variables in this study?
b. State the null hypothesis and the research hypothesis.
c. Calculate F and compare it with the critical value of F at the .01 and .05 a levels. At what level of error can you reject the null hypothesis, if at all?
d. Prepare an ANOVA summary table of the results.
e. Write the results in APA journal format.