calculate the 95% prediction intervals for the four different investments included in the following table

small stocks

(average return =18.11%) (standard deviation of return= 39.06%)

S&P 500

(average return= 12.97%) (standard deviation of return= 19.35%)

corporate bonds

(average return 6.04% ) (standard deviation of return= 7.88%)

A) the 95% prediction interval of small stocks is between ___% and ____%?

B) the 95% prediction interval for the S&P500 is between ___% and ___%?

C) the 95% prediction interval for the corporate bonds is between ____% and ___%?