SOLUTION: A researcher from a political party wishes to estimate with a 99% confidence level the proportion of female registered voters will vote for his candidate. What is the minimum sampl

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Question 1056838: A researcher from a political party wishes to estimate with a 99% confidence level the proportion of female registered voters will vote for his candidate. What is the minimum sample size needed to be within 2% of the true population proportion?

a. 4144
b. 3133
c. 4414
d. 4441
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
For 99% confidence level, z%5Bcrit%5D=2.576
p=q=0.5
N=%28z%5Bcrit%5D%5E2%2Apq%29%2F%28ME%29%5E2
N=%282.576%5E2%2A0.5%2A0.5%29%2F%280.02%29%5E2
N=4147.36
Rounding up,
N=4148