A college professor wonders if there is a relationship between how long students spend on their midterm exam and their resulting score. The professor picks a random sample of students to observe and notes each of their times (in minutes) and their scores (from 0 to 100).
What type of statical test used in this case?
A. A paired t-test for the mean difference
B. A two-sample z-test for the difference of proportions
C. A t-test for slope
D. A two-sample t-test for the difference of means
E. A z-test for a proportion
