3. For each of the following hypotheses, identify whether a one-tailed or a two-tailed test would be appropriate:

You are interested in finding out if the average household income of residents in your state is higher than the national average household. According to the U.S. Census, the national average household income is $50,054.

a. This would use a ___________________ test

• The null and research hypotheses would be:

b. H₀:

c. H₁:

4. Is there a difference in the amount of study time on-campus and off-campus students devote to their schoolwork during an average week?

a. This would use a ___________________ test

• The null and research hypotheses would be:

b. H₀:

c. H₁: