Evaluate Network Diagram Using Pert Calculate Probability Completing 15 Days Using Z Table Q34232860

   Evaluate the network diagram using PERT andcalculate the probability in completing in 15 days-   Using Z table

A- B – C

Start End

   D -E – F

Given that estimated time of completion Te(ABC)=19 with standarddeviation=3    and Te(DEF)=21 with standarddeviation=5

Expert Answer

For path ABC, z Value = (15-19)/3 = -1.333

P(z<=-1.333) = NORMSDIST(-1.333) = 0.0912

For path DEF, z Value = (15-21)/5 = -1.2

P(z<=-1.2) = NORMSDIST(-1.2) = 0.1151

Probability of completing in 15 days = 0.0912*0.1151 =0.0105