Match each question with the proper significance test (from (A) − (D)) needed to answer the question.
a. _____ Do a majority of students at your college prefer chocolate soft serve ice cream to vanilla?
b. _____ Is the proportion of females at your college who participate in varsity athletics different from the proportion of males who participate in varsity athletics?
c. _____ Is the average study time per week for seniors at your college different from the average study time per week for freshmen?
d. _____ On average, is there a significant difference in one’s heart rate before using chewing tobacco and after using chewing tobacco?
A. Single proportion test of significance 

B. Paired samples test of significance
C. Two-sample mean test of significance
D. Two-proportion test of significance