<PRE><B>Question 315736</B>
For this sample, the sample mean=9.8 and the sample variance=25. if the director wishes to estimate the mean number of admissions per 24-hour period to within 1 admission with 99% reliability, what size sample should she choose?
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n = [z*s/E]^2
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n = [2.5758*sqrt(25)/1]^2 = 166 after rounding up.
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Cheers,
Stan H.
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A. n=482
B. n=166
C. n=154
D. n=123 
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