SOLUTION: A political candidate has asked you to conduct a poll to determine what percentage of people support her.
If the candidate only wants a 4% margin of error at a 98% confidence le
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Question 1184847: A political candidate has asked you to conduct a poll to determine what percentage of people support her.
If the candidate only wants a 4% margin of error at a 98% confidence level, what size of sample is needed?
The political candidate will need to sample_____ people.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
error=z(0.99)*sqrt(p*(1-p))/n
let p=0.5 most conservative
0.04=2.326*sqrt(0.5*0.5/n)
square both sides
0.0016-5.41*0.25/n
n=5.41*0.25/0.0016
=845.31 or 846
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