In the last quarter of2007, a group of 64 mutual funds had a mean return of 2.3% with a standard deviation of 5.7%. If a normal model can be used to modelthem, what percent of the funds would you expect to be in eachregion? Use the68-95-99.7 rule to approximate the probabilities rather than using technology to find the values more precisely. Be sure to draw a picture first.

c) The expected percentage of returns that are between 9.1% and 13.7% is

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