Health professionals are concerned that the amounts of daily physical activity people are getting has dropped since the global COVID-19 pandemic. Researchers collect data on average daily activity levels from 118 randomly selected people who use Fitbits tied to online tracking programs before the onset of the pandemic and compare this to their current levels of activity.

15. What type of hypothesis test would you use to answer this question? Explain your reasoning.

16. What are the random variables and parameter, stated in words?

17. State the null and alternative hypotheses. Does the research question suggest a one- or two-tailed hypothesis test?

18. State and check (when possible) the assumptions for this type of test.

19. What are the sample statistics and test statistic that you would use for this test, and how would they be calculated?