Referencing Styles : Open 1. Five hundred (500) individuals were classified into three age groups: Group 1, 20-29; Group 2, 30-39; Group 3, 40 and over. In addition, they were placed into three groups depending on their diastolic blood pressure (DBP), as shown below: Age Group Group 1 (20-29) Group 2 (30-39) Group 3 (40+) Total DBP Below 70 20 30 20 70 70-90 60 140 60 260 Above 90 20 80 70 170 Total 100 250 150 500 Based on the above results, find the probability that a randomly selected individual in this study was: a. In age group 2. b. Had a diastolic blood pressure below 70 or in age group 3. c. In age group 3 and had a diastolic blood pressure above 90. d. In age group 1 and had a diastolic blood pressure between 70 and 90. e. Had a diastolic blood pressure above 90 or in age group 2. 2. Use the following journal article to answer the questions: Cowell, S. J., Newby, D. E., Prescott, R. J., Bloomfield, P., Reid, J., David B., … Boon, N. A. (June 9, 2005). A Randomized Trial of Intensive Lipid-Lowering Therapy in Calcific Aortic Stenosis. New England Journal of Medicine, 352(23), 2389–2397. a. Refer to Table 1 on page 2392, variable “Total cholesterol”: using the Empirical Rule, 95% of patients will have total cholesterol levels between what two values? b. Refer to Figure 1c on page 2393: determine the sample mean and standard deviation “LDL cholesterol” level readings at 12 months for both the treatment and the placebo groups.