hannahrando1853 hannahrando1853

19-08-2020
Business

contestada

The average annual return over the period 1886-2006 for stocks that comprise the S&P 500 is 8%, and the standard deviation of returns is 20%. Based on these numbers what is a 95% confidence interval for 2007 returns?

Respuesta :

Tundexi Tundexi

22-08-2020

Answer:

The confidence interval for 2007 returns are 32%, 48 %

Explanation:

As per 9% rule

Range = mean +/- 2*Standard deviation

Range = 8 +/- 2*20

Range = 8-40 to 8+40

Range = -32 to 48

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