Question

Chapter 5 9. A random lik eaydo mber nerator picks a number from one to nine, where each value is equally likely. Answer the following: a) X~ b) Graph the probability distribution. c) Find the probability density function: P(x) d) Find the mean e) Find the standard deviation f) P(3.6<x 7.45) g) P(x> 5.87)= h) P(x < 4.19) i) P(x > 6 x > 4) j) P(x >2.7 x <7.9) - k) "Which value of "x"represents the 80th percentile? 1) "Which value of "x" represents the top 60th percentile?

Answer 1

Date: 3 (け 2. e) stan dard devati n 23 T-4S 3.6 0.813 XS.8 S.81 S 87 0.391 · 4-13 4-19-

Date: / ズ 4 2 P2.nx<7.9 X <7.9) (7), d 3 1.9-2.1 0.1S 2 1