A current Nielsen survey provided the estimate that the mean number of hours of television viewing per household is 7.25 per day (New York Daily News). Assume that the Nielsen survey involved 200 households and that the sample standard deviation was 2.5 hours per day. Conduct a hypothesis test to compare this with TV watching 10 years ago when the population mean number of hours of television viewing per household was reported to be 6.70 hours. Letting =population mean number of hours of television viewing per household now, test the hypotheses H_o: 6.70 and H_a: > 6.70. Use alpha=0.01. What is your conclusion about any change in television viewing time?