Hypothesis Testing of a Single Mean and Single Proportion

Television Survey in a recent survey, it was stated that Americans watch television on average four hours per day. Assume that= 2. Assuming your class Math 160 as the sample, the average of watching TV among 40 students was 3 hours.Conduct a hypothesis test to determine if the average for students at your school is lower.

1. H0: _____________
2. Ha: _____________
3. In words, define the random variable. __________ = ______________________
4. The distribution to use for the test is _______________________.
5. Determine the test statistic using your data.
6. Draw a graph and label it appropriately. Shade the actual level of significance.
7. Graph: