Use the Following Information for Questions:
in a Random $p_1$

Multiple Choice

Use the following information for questions:
In a random sample of 250 full time students, 80% preferred to have three one-hour lectures per week rather than two 90-minute lectures. In a random sample of 500 part-time students, 50% said they preferred the three one-hour lectures schedule. The difference between the two sample proportions (full-time - part-time) is to be calculated.
-Which of the following choices correctly denotes the difference between the two sample proportions that is to be calculated?

A) $p_1$ - $p_2$ = 0.30
B) $p_1$ - $p_2$ = -0.30
C) $\hat{p_1}$ - $\hat{p_2}$ = 0.30
D) $\hat{p_1}$ - $\hat{p_2}$ = -0.30