In the last quarter of? 2007, a group of 64 mutual funds had amean return of 1.9?% with a standard deviation of 6.3?%. Considerthe Normal model ?N(0.019?,0.063?) for the returns of these mutualfunds. ?
a) What value represents the 40th percentile of these? returns??
b) What value represents the 99th? percentile?
?c) What's the? IQR, or interquartile? range, of the quarterlyreturns for this group of? funds?
