Jan's All You Can Eat Restaurant charges $9.00 per customer to eat at the restaurant. Restaurant management finds that its expense percustomer, based on how much the customer eats and the expense oflabor, has a distribution that is skewed to the right with a mean of $8.10 and a standard deviation of $3.

If the 100 customers on a particular day have the characteristics of a random sample from their customerbase, find the mean and standard deviation of the sampling distribution of therestaurant's sample mean expense per customer.

The mean is