It Is Desired to Estimate the Proportion of College Students $n = 189$

Multiple Choice

It is desired to estimate the proportion of college students who feel a sudden relief now that their statistics class is over. How many students must be sampled in order to estimate the true proportion to within 2% at the 90% confidence level?

A) $n = 189$
B) $n = 2401$
C) $n = 133$
D) $n = 1692$
E) Cannot determine because no estimate of $p$ or $q$ exists in this problem