question #12 The standard deviation for a PERT diagram is calculated by: taking the sum of the variances of the nodes on the critical path and then find the square root of that sum taking the sum of the standard deviations of all the nodes. taking the sum of the standard deviations of the nodes on the critical path. taking the sum of the variances of all the nodes, then find the square root of that sum

question #12 The standard deviation for a PERT diagram is calculated by: taking the sum of the variances of the nodes on the critical path and then find the square root of that sum taking the sum of the standard deviations of all the nodes. taking the sum of the standard deviations of the nodes on the critical path. taking the sum of the variances of all the nodes, then find the square root of that sum

 

Solution

a.taking the

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