Business statistics Class A laptop manufacturer finds that t

Business statistics Class

A laptop manufacturer finds that the average time it takes an employee to load a laptop with software is 20 minutes with a standard deviation 8 minutes. Suppose you take a random sample of 64 employees. The standard deviation of the sample mean is:

Solution

The standard error of the sample mean is

se = s / sqrt(n)

Thus,

se = 8 / sqrt(64)

se = 1 minute [answer]