38. The project manager for a project is going to use the PERT method of
scheduling for the project that she is working on. Using the PERT
calculation the variance for the project is found to be 25 days and the
duration of the project is found to be 169 days. What is the range of
values for the project duration such that there will be at least a 95%
probability that the actual project completion will fall between the high
and low value of the range of values?
a. 164–173 days
b. 144–194 days
c. 119–219 days
d. 159–179 days
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