A random sample of 10 U.S adult males who jog at least 15 miles per week had the following pulse rates per minutes. Find a 99% confidence interval for the mean pulse rate of all U.S. adult males who jog at least 15 miles per week. Assume normal distribution for pulse rates.

54 50.5 50.8 53 52.5, 53, 54, 52, 53.5, 55