The mean cost of a set of new set of Queen sheets having a 500 thread count is $65.40 with a standard deviation of $7.41. Let be the mean of a random sample of 16 packages of such Queen sheets. Find...

The mean cost of a set of new set of Queen sheets having a 500 thread count is $65.40 with a standard deviation of $7.41.  Let be the mean of a random sample of 16 packages of such Queen sheets. Find the mean and standard deviation of the sampling distribution of .