You may need to use the appropriate appendix table or technology to answer this question. The average
Question:
You may need to use the appropriate appendix table or technology to answer this question.
The average U.S. daily internet use at home is two hours and twenty minutes. A sample of 81 homes in a certain city showed an average usage of one hour and 45 minutes with a standard deviation of 70 minutes. We are interested in determining whether or not the average usage in that city is significantly different from the U.S. average.
(a)State the null and alternative hypotheses (in minutes) to be tested. (Enter != for as needed.)
H0:
Ha:
(b)Compute the test statistic.
(c)The null hypothesis is to be tested using = 0.05. Determine the critical value(s) for this test. (Round your answer(s) to two decimal places. If the test is one-tailed, enter NONE for the unused tail.)
test statistic
test statistic
(d)What do you conclude?
-Reject H0. We cannot conclude that the average usage in that city is significantly different from the U.S. average.
-Reject H0. We can conclude that the average usage in that city is significantly different from the U.S. average.
-Do not reject H0. We cannot conclude that the average usage in that city is significantly different from the U.S. average.
-Do not reject H0. We can conclude that the average usage in that city is significantly different from the U.S. average.