A.Your stock investment returns were 8%, 12%, and -4% in consecutive years. What is the average return?
. (Use decimals, not percent in your calculation and for your answer. Round your answer to 4 decimal places.)
B. What is the sample standard deviation of your investment's return?
(Use decimals, not percent in your calculations. Round to 5 decimal places in intermediate steps and round to 4 decimal places in the final step.)
C. Using the standard deviation and mean that you just calculated, and assuming a normal probability distribution, what is the probability of losing 3% or more?
%. (Use percent.)
a. Expected Return = 0.0533
b. Standard deviation = 0.0833
c. Probability = Z((Required Return - Mean) / Standard deviation)
Probability = Z((3%- 5.33%) / 8.33%)
Probability = Z(X<-0.28)
Probability = 0.3897
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