If P(A B) = 0,
a. P(A) + P(B) = 1.
b. either P(A) = 0 or P(B) = 0.
c. A and B are mutually exclusive events.
d. A and B are independent events.
Question 2
The variance in the project completion time is the sum of the variances of all activities in the project.
a. True
b. False
Indicate whether the statement is true or false