SOLUTION: It is determined that a sample size of 406 is needed to produce a maximum error of 0.2 with 99% confidence interval estimate of � , the mean of a population. What is the standard

Question 714814: It is determined that a sample size of 406 is needed to produce a maximum error of 0.2 with 99% confidence interval estimate of � , the mean of a population. What is the standard deviation of the population?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
It is determined that a sample size of 406 is needed to produce a maximum error of 0.2 with 99% confidence interval estimate of � , the mean of a population. What is the standard deviation of the population?
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Using E = z*s/sqrt(n), solve for "s":
0.2 = 2.5758*s/sqrt(406)
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s = 0.2*sqrt(406)/2.5758
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s = 1.5645
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Cheers,
Stan H.
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