A study on students drinking habits asks a random sample of

A study on students drinking habits asks a random sample of 170 female UF students (over 21) how many alcoholic beverages they have consumed in the past week. The sample reveals an average of 4.05 alcoholic drinks, with a standard deviation of 4.66. Construct a 99% confidence interval for the true average number of alcoholic drinks all UF female students (over 21) have in a one week period.