The estimated variance for an activity with a most likely time (m)equal to 11 days,the optimistic time (a)equal to 6 days,and the pessimistic time (b)equal to 18 days is
A)2 days.
B)4 days.
C)6 days.
D)11 days.

Question

Quizplus · Accepted Answer

The formula for estimating variance is:

Variance = ((b-a)/6)^2

Substituting the given values:

Variance = ((18-6)/6)^2

Variance = (12/6)^2

Variance = 4

Therefore, the estimated variance is 4 days. Option B is the correct choice.

The Estimated Variance for an Activity with a Most Likely