In: Math
Test the hypothesis that the average number of T.Vs in U.S. households is less than 3. Your sample consists of 100 households with a mean of 2.84 T.Vs. You know the population standard deviation to be 0.8. Your desire a level of significance of 0.05
Since the null hypothesis is rejected against the alternative that population mean is less than 3 at 5% level of significance, we conclude that the average number of T.Vs in U.S. households is less than 3.