Problems 8A, 8B & 9

8. Suppose scores on a recent LSAT exam are normally distributed with a mean of 151 (p = 151) and a standard deviation of 11.7 (a : 11.7). (9 pts) a) Find P90 the score that separates the bottom 90% from the top 10%. 0% 50% 100% b) Find P93 the score that separates the bottom 98% from the top 2%. 0% 50% 100% 9. Find the 90% confidence interval (CI) and margin of error (M E) for systolic blood pressures for women aged 1824 when: n = 92, sample mean Y = 114.9, standard deviation 0 = 13.2 Interpret your results. (8 pts)