SOLUTION: If a population has a standard deviation of 16, what is the minimum number of samples that need to be averaged in order to be 95% confident that the average of the means is within

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Question 861054: If a population has a standard deviation of 16, what is the minimum number of samples that need to be averaged in order to be 95% confident that the average of the means is within 3 of the true mean?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

ME = 3+=+1.96%2816%2Fsqrt%28n%29%29

  n+=+%281.96%2A16%2F3%29%5E2 = 110 rounded up to a whole sample

CI	z -value

90%	z =1.645

92%	z = 1.751

95%	z = 1.96

98%	z = 2.326

99%	z = 2.576