Question 7 [10 marks] According to a recent study, a visit to a primary care physician lasts less than 5 min for half of the world's population. In the United States, appointments with a primary care physician last, on average, 20 min. Residents at Geisinger Medical Center are being trained to spend more time with their patients, to listen carefully, and to develop a relationship with each patient. A random sample of patient visits at Geisinger was obtained, and the time spent with the primary care physician was recorded. T ime Spent (in minutes) 24 23 22 21 14 25 32 a. [7 marks] Is there any evidence to suggest that the true population mean time spent with each patient is greater than 20 min? Assume normality and use 0L=0.05. i. [3 marks] Determine the four parts of a hypothesis test. ii. [2 marks] Determine the test statistic. Round to four decimal places. iii. [2 marks] Is there any evidence to suggest that the true population mean time spent with each patient is greater than 20 min? b. [3 marks] Find bounds on the p value associated with this hypothesis test. Use the form lower bound