You have just used the network planning model and found the critical path length is 30 days and the variance of the critical path is 25 days.The probability that the project will be completed in 33 days or less is equal to (2 decimal accuracy)
A)0.73
B)0.55.
C)0.12
D)0.27
E)0.60.

Question

Quizplus · Accepted Answer

We can use the normal distribution to calculate the probability. Since the variance of the critical path is 25 days, the standard deviation is the square root of the variance, which is 5 days.

To calculate the probability of completing the project in 33 days or less, we need to calculate the z-score first:

z = (33 - 30) / 5 = 0.6

Then, we can use a standard normal distribution table to find the probability:

P(z <= 0.6) = 0.7257

Rounding to two decimal places, the probability is 0.73, which corresponds to option B.

You Have Just Used the Network Planning Model and Found