Suppose it is desired to estimate the average time a customer spends in a particular store to withir 5 minutes (e.g., $\pm 5$ 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) $n = 35$
B) $n = 25$
C) $\mathrm { n } = 60$
D) $\mathrm { n } = 299$

Question

Suppose it is desired to estimate the average time a customer spends in a particular store to withir 5 minutes (e.g.,

\pm 5

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) $n = 35$
B) $n = 25$
C) $\mathrm { n } = 60$
D) $\mathrm { n } = 299$

Quizplus · Accepted Answer

The Answer of Suppose it is desired to estimate the average time a customer spends in a particular store to withir 5 minutes (e.g., $\pm 5$ 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) $n = 35$
B) $n = 25$
C) $\mathrm { n } = 60$
D) $\mathrm { n } = 299$

Suppose It Is Desired to Estimate the Average Time a Customer