Statistical Methods I - MAT 152-41 - Summer 2022 Josie Hise 07/05/22 6:25 PM Homework: Section 7.1 Question 14, 7.1.22-T HW Score: 91.56%, 14.65 of 16 points Part 2 of 3 Points: 0.25 of 1 Save In a survey of 3031 adults aged 57 through 85 years, it was found that 81.2% of them used at least one prescription medication. Complete parts (a) through (c) below. a. How many of the 3031 subjects used at least one prescription medication? 2461 (Round to the nearest integer as needed.) b. Construct a 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication. 1%