A firm believes the internal rate of return for its proposed investment can best be described by a normal distribution with mean 45% and standard deviation 4%.
a) What is the probability that the internal rate of return for the investment will be between 41% and 49%?
b) What is the probability that the internal rate of return for the investment will be more than 41%?
c) What is the probability that the internal rate of return for the investment will be less than 33%? Use the Excel templet for this part.
d) What is the probability that the internal rate of return for the investment will be more than 33%? Use the Excel templet for this part.
e) Draw the distribution (the bill shaped curve) express the problem in the original units (X) and in standardized units (Z)
Normal Probabilities | ||
Common Data | ||
Mean | 45 | |
SD | 4 | |
Probability for X <= | ||
X Value | ||
Z Value | ||
P(X<=33) | ||
Probability for X > | ||
X Value | ||
Z Value | ||
P(X>33) | ||
Normal Probabilities | ||
Common Data | ||
Mean | 45 | |
SD | 4 | |
Probability for X <= | ||
X Value | 33 | |
Z Value | -3 | |
P(X<=33) | 0.0013 | |
Probability for X > | ||
X Value | 33 | |
Z Value | -3 | |
P(X>33) | 0.9987 | |
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