Question 1061352

Minimum sample size you should use to assure that your estimate of ^p will be within the required margin of the population p.

Margin of error: 0.04; confidence level: 90%; from a prior study, ^p is estimated by 0.27. Let z=1.645

A) 13
B) 334
C) 296
D) none of these
E) 1002
<pre>Both z = 1.645, and confidence level: 90% are not needed. Just 1 is fine.
With estimated proportion, or p&#0770 being 0.27, sample size for the proportion, or: {{{highlight_green(matrix(1,5, n, "=", 334, "(CHOICE", "B)"))}}}