A professor is interested in the relationship between the number of hours students study for
a quiz and their quiz grades. She asked each student to record the number of hours that
he/she studied for the final exam. She also recorded the students’ grades in percentages
(ex. 86%). What technique should the professor use to analyze the data?
a. t-test for two independent samples
b. t-test for matched pairs
c. Chi square test for independence
d. correlation