Question

Lisa has collected data to find that the number of pages per book on a book shelf has a normal distribution. What is the probability that a randomly selected book has fewer than 137 pages if the mean is 195 pages and the standard deviation is 29 pages? Use the empirical rule.Enter your answer as a percent rounded to two decimal places if necessary.

Answer 1

Solution :

Given that,

$\mu$= 195

$\sigma$ = 29

P(X < 137) = 0.025

Answer = 2.50%