Multiple Choice
The average annual return over the period 1886-2006 for stocks that comprise the S&P 500 is 10%,and the standard deviation of returns is 20%.Based on these numbers,what is a 95% confidence interval for 2007 returns?
A) -15%,25%
B) -20%,40%
C) -30%,50%
D) -30%,40%
E) -10%,30%
Correct Answer:

Verified
Correct Answer:
Verified
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