Suppose it is desired to estimate the average time a customer spends in a particular store to within 5 minutes $$( \text { e.g. } \pm 5 \text { minutes) }$$ at 99% reliability. It is estimated that the standard deviation of the
Times is 15 minutes. How large a sample should be taken to get the desired interval?
A)n = 299
B)n = 60
C)n = 25
D)n = 35

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The Answer of Suppose it is desired to estimate the average time a customer spends in a particular store to within 5 minutes $$( \text { e.g. } \pm 5 \text { minutes) }$$ at 99% reliability. It is estimated that the standard deviation of the
Times is 15 minutes. How large a sample should be taken to get the desired interval?
A)n = 299
B)n = 60
C)n = 25
D)n = 35

Suppose It Is Desired to Estimate the Average Time a Customer