SOLUTION: A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and other features. The distribution of the number of m
Question 1206712: A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and other features. The distribution of the number of months in service for the fleet of cars is bell-shaped and has a mean of 64 months and a standard deviation of 11 months. Using the 68-95-99.7 rule, what is the approximate percentage of cars that remain in service between 42 and 53 months?
Do not enter the percent symbol.
ans = Answer by ikleyn(52908) (Show Source): You can put this solution on YOUR website! .
42 is two standard deviations down from the mean.
53 is one standard deviation down from the mean.
Therefore, the ANSWER is = 13.5%.