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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 1.4​% with a standard deviation of 4.4​%. Consider the Normal model ​N(0.014​,0.044​) for the returns of these mutual funds. ​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 quarterly returns for this group of​ funds?

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