Question 320238
A popular manufacturer of men's jeans would like to estimate the population mean of 32" length jeans. 
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The population standard deviation is known to be 0.65". 
Determine the sample size needed to hold the maximum 
error of the estimate to 0.5 with a confidence of 98%.

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n = [z*s/E]^2
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n = [2.3263*0.65/0.5]^2 = 9.14
Round up to n = 10
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Cheers,
Stan H.