4 A random sample of 50 business students required an averag

4. A random sample of 50 business students required an average of 43.4 minutes to complete a statistics exam. Assume that the population standard deviation to complete the exam was 8.7 minutes. The standard error of the mean for this sample is?

The standard error of the mean is

s/vn = 8.7/sqrt(50) = 1.230366