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A stock has an expected rate of return of 14.2 percent and a standard deviation of 23.4 percent. Which one of the following best describes the probability that this stock will lose more than 32.6 percent of its value in any one year?(A) Approximately 1 percent.(B) Less than 1 percent(C) Approximately 2.28 percent(D) Less than 0.26 percent

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abdullahfarooqi

Answer:

1.

mean=(14%+3%+9%-12%)/4=3.5%

variance=((14%-3.5%)^2+(3%-3.5%)^2+(9%-3.5%)^2+(-12%-3.5%)^2)/3=0.0127

Option D

2.

mean=(19%+12%-10%+25%+4%)/5=10%

standard deviaiton=sqrt(((19%-10%)^2+(12%-10%)^2+(-10%-10%)^2+(25%-10%)^2+(4%-10%)^2))/4)=12.2147%

Pr(X>=30%)=1-Pr(X<30%)=1-Pr(Z<(30%-10%)/12.2147%)=5.077%

Option 1

3.

Pr(X<-32.6%)=Pr(Z<(-32.6%-14.2%)/23.4%)=2.28%

Option C

Explanation:

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