The Radio Advertising Bureau of New York reports in Radio Facts that, in 2000, the mean number of radios per U. household was 5. A random sample of...

The Radio Advertising Bureau of New York reports in Radio Facts

that, in 2000, the mean number of radios per U.S. household was 5.6. A random sample of 45

U.S. households is taken this year and the mean number of radios per U.S. household was 5.88.

Do the data provide sufficient evidence to conclude that this year's mean number of radios per

U.S. household has changed from the 2000 mean of 5.6? Assume that the population standard

deviation of this year's number of radios per U.S. household is 1.9. Use 5% level of significance.

(Use MINITAB to solve this problem)