1. (6.5 PTS] Ten patients were selected to participate in an experiment to assess how a new medication affects pulse rates {Beats/min]. The results are summarized below. + Pulse Rates [beats/min) for 10 Patients before and after medication administration Patient # 1 2 3 4 5 E 7 S 9 10 Before 81 76 82 80 86 79 83 85 84 82 After 78 76 77 76 82 78 81 8O 81 78 Difference 1a) (1.25 PTS] Compute the pulse rate differences of the before and after values and complete the table. Create a histogram of the differences and briefly describe. Comments: Your graphs should be descriptive, organized and clear. Think carefully about labeling, clarity and communication. Graphing is more than the mechanics of the software; you must communicate a story accurately and succinctly to address the interests ofthe investigators. 1a) ANSWER: 1b) [4 PTS) Test the null hypothesis that there is no change in pulse rates when patients take the new medication. Provide all steps of hypothesis testing, including assumptions and interpretation ofthe results. Assume that the data are normally distributed, regardless of 1glour answer in part (a). 1b) ANSWER: 1c} {1.25 PTS) Calculate a 95% confidence interval and interpret the results. 1c}