Question: There are two shipping routes between a plant and a distribution point. The average time by route A is 220 minutes with a standard deviation of 20 minutes. The average tiMeand standard deviation by route B are 200 and 40 respectively. Assume the distributions of trips can be approximated by normal curves.

A. What proportion of route B trips takes longer then the average route A trip?

B. 95% of route A trips take between what 2 values that are equidistant from the mean?