The follow ing tab le s h o w s th e annual returns (in percent) for

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The follow ing tab le s h o w s th e annual returns (in percent) for th e Vanguard Energy Fund from 200 5 through 2009.

Year E nergy 2005 44.60 2006 19.68 2007 37.00 2008 − 42.87 2009 38.36 Source: www.finance.yahoo.com .

a. Calculate th e poin t estim ate o f σ .

b. C on str u c t a 95% c o n f i d e n c e interval o f σ . P-399

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Business Statistics Communicating With Numbers

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Authors: Kelly Jaggia

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Question Posted: Jul 25, 2024 10:02 AM

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The follow ing tab le s h o w s th e annual returns (in percent) for

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Business Statistics Communicating With Numbers

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