Questions 4: (Total Points = 20) Recent recommendations from the national institute of health suggest 60 minutes of physical activity per day. A sample of 25 adults in a study of cardiovascular risk factors report exercising a mean of 38 minutes per day with a standard deviation of 19 minutes. Based on the sample data, is the adults' physical activity signicantly less than the recommended level? Perform the appropriate hypothesis test at a 5% level of signicance. Where applicable, you must show your all calculations in order to receive points. a. Specify the DEE of sample (i.e., one sample or two sample; independent or dependent samples) and outcome variable (i.e., dichotomous or continuous) for this study? b. What are the null and research hypotheses? c. Write down the decision rule. d. Calculate the appropriate test statistics for this data set. e. Based on the study outcome, what would be an appropriate conclusion on the physical activity of the sampled population of adults