A random sample of n = 31 households is asked the number of TV sets in the

Question:

A random sample of n = 31 households is asked the number of TV sets in the household. The responses are as follows:

a. What is the mean number of TVs for the sample?
b. What is the standard deviation for the sample?
c. What is the best estimate for the mean number of TVs for the population of all American households?
d. What is the 95% confidence interval for the estimate?
e. Comment on the reliability of the estimate.