In the last quarter of 2017, a group of 64 mutual funds had a mean return of 4.2% with a standard deviation of 4.9%. 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 percentages rather than using technology to find the values more precisely. Be sure to draw a picture first. a) Returns of 9.1% or more c) Returns between - 10.5% and 18.9% b) Returns of 4.2% or less d) Returns of more than 14.0%

FINANCIAL ACCOUNTING
10th Edition
ISBN:9781259964947
Author:Libby
Publisher:Libby
Chapter1: Financial Statements And Business Decisions
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In the last quarter of 2017, a group of 64 mutual funds had a mean return of 4.2% with a standard deviation of
4.9%. 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 percentages rather than using technology to find the
values more precisely. Be sure to draw a picture first.
a) Returns of 9.1% or more
c) Returns between - 10.5% and 18.9%
b) Returns of 4.2% or less
d) Returns of more than 14.0%
Transcribed Image Text:In the last quarter of 2017, a group of 64 mutual funds had a mean return of 4.2% with a standard deviation of 4.9%. 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 percentages rather than using technology to find the values more precisely. Be sure to draw a picture first. a) Returns of 9.1% or more c) Returns between - 10.5% and 18.9% b) Returns of 4.2% or less d) Returns of more than 14.0%
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