What is the probability that the critical path for this project will be completed within 210 days?
A)0.5000
B)0.8413
C)0.9544
D)0.9772
E)0.9987

Question

Quizplus · Accepted Answer

By using the normal distribution table and z-score formula,
z = (210-200)/10 = 1, where 200 is the mean and 10 is the standard deviation of completion time. 
Looking up the table, we can find that the area to the left of z = 1 is 0.8413, which represents the probability of completing the project within 210 days. Therefore, the best choice is D.

What Is the Probability That the Critical Path for This