Sampling distribution

The age of students in a known population is thought to be normally distributed
with standard deviation = 13.5 years. The age of a random sample of 36 of these
students is recorded below. Answer questions a – e. Use List on the TI-84 PLUS for a, b
(a) Calculate the sample mean
42 28 34 29 23 18 27 34 48 26 30 16
20 27 24 36 18 20 25 22 19 25 40 50
22 28 33 35 32 44 48 36 38 28 42 46