The following table shows the annual returns (in percent) for the Vanguard Energy Fund from 2005 through

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The following table shows the annual returns (in percent) for the Vanguard Energy Fund from 2005 through 2009.

Year....................Energy

2005.....................44.60

2006.....................19.68

2007.....................37.00

2008....................−42.87

2009.....................38.36

a. Calculate the point estimate of

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The following table shows the annual returns (in percent) for the Vanguard Energy Fund from 2005 through

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a s 2 129548and s s 2 3599 b We use df n151 4 005 2 00251 2 0975 ...View the full answer

Business Statistics Communicating With Numbers

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