Can anyone help me with this?

A research company desires to know the mean consumption of

milk per week among males over age 45. A sample of 601 males over age 45 was drawn and the mean milk consumption was 5.1 liters. Assume that the population standard deviation is known to be 11 liters. Construct the 95% confidence interval for the mean consumption of milk among

males over age 45. Round your answers to one decimal place.

I need the lower endpoint and the upper end point