Chapter 9.5, Problem 113E

Preliminary data analyses indicate that you can reasonably use a t-test to conduct each of the hypothesis tests required in Exercises 9.113–9.118.

9.113 TV Viewing. According to Communications Industry Forecast & Report, published by Veronis Suhler Stevenson, the average person watched 4.55 hours of television per day in 2005. A random sample of 20 people gave the following number of hours of television watched per day for last year.

At the 10% significance level, do the data provide sufficient evidence to conclude that the amount of television watched per day

last year by the average person differed from that in 2005? (Note: $\bar{x}$ = 4.760 hours and s = 2.297 hours.)