SOLUTION: You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 99.5% co

Question 1119286: You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 99.5% confident that you estimate is within 0.5% of the true population proportion. How large of a sample size is required?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 99.5% confident that you estimate is within 0.5% of the true population proportion. How large of a sample size is required?
================
Since E = z*sqrt[pq/(n)]
n = [z/E]^2*p*q
----
Ans: n = [2.8070/0.005]^2*(1/2)(1/2) = 78795 when rounded up
---------
Cheers,
Stan H.
------------
RELATED QUESTIONS
You want to obtain a sample to estimate a population proportion. At this point in time,... (answered by Boreal)

You want to obtain a sample to estimate a population proportion. At this point in time,... (answered by ewatrrr)

You want to obtain a sample to estimate a population proportion. At this point in time,... (answered by Theo)

You want to obtain a sample to estimate a population proportion. You have no reasonable... (answered by Boreal)

you want to obtain a sample to estimate the population proportion you would like to be at (answered by ewatrrr)

You want to obtain a sample to estimate a population proportion. Based on previous... (answered by Boreal)

You want to obtain a sample to estimate a population proportion. Based on previous... (answered by Boreal,math_tutor2020)

ou want to obtain a sample to estimate a population proportion. Based on previous... (answered by ewatrrr)