Compute the variance of the project completion time

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In a situation with uncertain activity times, we generally assume the project completion time follows a normal distribution. How do you compute the variance of the project completion time?

A. sum the variances of all the critical activities

B. sum the variances of all the activities

C. sum the standard deviations of all the critical activities then square this sum

D. sum the standard deviations of all the activities then square this sum

Reference no: EM13779045

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