Interval Estimation Problem 6 Page 304 Nielson media research reported that the household mean television viewing time during the 8 pm to 11 pm time

A survey conducted by the American Automobile Association showed that a family of four spends an average of $215.60 per day while on vacation. Suppose a sample of 64 families of four vacationing at Niagara Falls resulted in a sample mean of $252.45 per day and a sample standard deviation of $74.50