Drivers in Wyoming drive more miles yearly than motorists in any other state. The annual number of miles driven per licensed driver in Wyoming is 22,664 miles. Assume the standard deviation is 6,500 miles. A random sample of 250 licensed drivers in Wyoming is selected and the mean number of miles driven yearly for the sample is calculated. a. What value would we expect for the sample mean? b. What is the standard error for the sample mean? a. The expected sample mean is miles, because the (Round to the nearest integer as needed.)