A project's critical path is composed of activities A (variance. 33), B (variance. 67), C (variance. 33), and D (variance. 17). What is the standard deviation on the critical path?

standard deviation on the critical path is 1.22

Explanation:

Given the four (4) activities below,

Activities A has Variance (.33)

Activities B has Variance (.67)

Activities C has Variance (.33)

Activities D has Variance (.17)

Hence,

Standard Deviation = √sum of variance of activities A, B, C and D

=√.33+.67+.33+.17

SD = √1.5

SD = 1.22