In the first quarter of 2017, a group of domestic equity mutual funds had a mean return of 6.2% with a standard deviation of 1.8%. If a Normal model can be used to model them, what percent of the funds would you expect to be in each region? Be sure to draw a picture first.

a) Returns of 8.0% or more

b) Returns of 6.2% or less

c) Returns between 2.6% and 9.8%

d) Returns of more than 11.6%

Rule to approximate the probabilities rather than using technology to find the values more precisely. Answers given for probabilities or percentages from Exercise 31 on assume that a calculator or software has been used. Answers found from using Z-tables may vary slightly.