A prior study determined the point estimate of the population proportion as 23% ( = 0.23). The analysts want to conduct a second survey about the same topic that has a margin of error, E, of 17% and a confidence level of 99% (z*-score of 2.58).What is the minimum sample size that should be used so the estimate of will be within the required margin of error of the population proportion?n = (1 – ) • 371241
Accepted Solution
A:
We have:
z-score = 2.58 Proportion, p = 0.23 q = 1 - 0.23 = 0.77 Margin of error, E = 17% = 0.17