Chapter 07 Section 72 Problem 013b Round your answers to thr

Chapter 07, Section 7.2, Problem 013b

Round your answers to three decimal places.

equals

By central limit theorem, the mean of the sample means is still the population mean, u(X) = 80.

Also, the standard error of the means is given by

sigma(X) = sigma/sqrt(n) = 14/sqrt(120) = 1.278019301.

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Thus,

u(X) = 80.000 [ANSWER]

sigma(X) = 1.278 [ANSWER]