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The average annual return over the period1926-2009 for theS&P 500 is 12.6%, and the standard deviation of returns is 20.4%. Based on thesenumbers, what is
The average annual return over the period1926-2009 for theS&P 500 is 12.6%, and the standard deviation of returns is 20.4%. Based on thesenumbers, what is a95% confidence interval for 2010returns?
A.
28.2%, 74.8%
B.
1.4%, 21.4%
C.
28.2%, 53.4%
D.
9.9%, 32%
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