n achieved by all the funds, is 8.20 and me empirical rule, what percentage of these andard deviation of the mean? e empirical rule, what percentage of these f andard deviations of the mean?

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Consider a population of 1,024 mutual funds that primarily invest in
large companies. You have determined that the mean one-year total
percentage return achieved by all the funds, is 8.20 and that the standard
deviation, is 2.75.
a. According to the empirical rule, what percentage of these funds are expected
to be within ±1 standard deviation of the mean?
b. According to the empirical rule, what percentage of these funds are expected
to be within ±2 standard deviations of the mean?
Transcribed Image Text:Consider a population of 1,024 mutual funds that primarily invest in large companies. You have determined that the mean one-year total percentage return achieved by all the funds, is 8.20 and that the standard deviation, is 2.75. a. According to the empirical rule, what percentage of these funds are expected to be within ±1 standard deviation of the mean? b. According to the empirical rule, what percentage of these funds are expected to be within ±2 standard deviations of the mean?
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