Question

A transportation worker takes a simple random sample of 162 toll booth receipts for one day and finds that the mean is $7.38 with a standard deviation of $1.45. What is the 99% confidence interval for the mean amount of all the receipts that day?
(Points : 4)
($7.30, $7.46)

($7.27, $7.49)

($7.16, $7.60)

($7.09, $7.67)

Answer 1

@jagr2713