Question
In the last quarter of 2007, a group of 64 mutual funds had a mean return...
In the last quarter of 2007, a group of 64 mutual funds had a mean return of 3.8% with a standard deviation of 6.2%. If a normal model can be used to model them, what percent of the funds would you expect to be in each region? Use the 68-95-99.7 rule to approximate the probabilities rather than using technology to find the values more precisely. Be sure to draw a picture first.
| a) Returns of
10% or more |
b) Returns of
3.8% or less |
| c) Returns between
-14.8 and 22.4% |
d) Returns of
more than 16.2% |
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Answer #1
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