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What is the standard error of the mean how would the

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Reference no: EM13579396

A survey of 25 randomly selected customers found the ages shown (in years). The mean is 32.56 years and the standard deviation is 9.15 years.

a) What is is the standard error of the mean?

b) How would the standard error change if the sample size had been 100 instead of 25?

Reference no: EM13579396

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