Please make a PERT Table and show how to calculate the standard deviation for the entire path?

In a CPM Network, the critical path has six activities. Their durations are tabulated below. what is the expected duration of the project? DURATION Expected Std. ACTIVITY Variance Optimistic Most Likely Pessimistic Duration Deviation (To) (Tm) (TP) (Te) (Ve) (se) B 2 3 5 D 4 8 13 F 6 8 K 3 3 3 N 7 10 15 S 3 5 8TABLE 11.1. 2 Table: Cumulative Probability of the Standard Normal Distribution Z .00 .01 02 03 .04 .05 .06 07 08 .09 0.0 5000 .5040 .5080 .5120 .5160 5199 5239 5279 5319 5359 0.1 5398 .5438 .5478 .5517 5557 .5596 1.5636 .5675 .5714 5753 0.2 .5793 .5832 .5871 5910 .5948 .5987 6026 .6064 .6103 6141 0.3 6179 6217 .6255 .6293 633 6368 6406 6443 6480 6517 0.4 6554 6591 .6628 6664 .6700 .6736 6772 .6808 .6844 .6879 0.5 .6915 6950 .6985 .7019 .7054 .7088 .7123 .7157 .7190 .7224 0.6 .7257 7291 .7324 .7357 .7389 .7422 .7454 .7486 .7517 .7549 0.7 .7580 .7611 .7642 .7673 .7704 .7734 7764 .7794 .7823 7852 0.8 .7881 .7910 7939 .7967 .7995 .8023 .8051 8078 1.8106 .8133 0.9 .8159 8186 .8212 .8238 .8264 .8289 8315 .8340 8365 8389 1.0 .8413 8438 .8461 .8485 8508 8531 8554 .8577 8599 8621 1.1 .8643 .8665 .8686 .8708 .8729 8749 8770 .8790 .8810 8830 1.2 8849 8869 8888 8907 .8925 .8944 .8962 1.8980 1.8997 .9015 1.3 .9032 .9049 .9066 9082 .9099 .9115 .9131 .9147 .9162 .9177 1.4 .9192 .9207 .9222 .9236 .9251 .9265 .9279 1.9292 9306 9319 1.5 9332 .9345 .9357 .9370 .9382 .9394 .9406 1.9418 1.9429 9441 1.6 .9452 .9463 9474 .9484 .9495 . 1.9505 .9515 .9525 .9535 .9545 1.7 9554 .9564 .9573 1.9582 .9591 .9599 .9608 9616 9625 9633 1.8 9641 .9649 .9656 .9664 .9671 .9678 1.9686 .9693 1.9699 9706 1.9 .9713 .9719 9726 .9732 .9738 1.9744 -.9750 .9756 1.9761 9767 2.0 .9772 .9778 9783 9788 .9793 .9798 .9803 .9808 9812 .9817 2. 9821 .9826 .9830 .9834 .9838 .9842 .9846 1.9850 1.9854 .9857 2.2 .9861 .9864 .9868 .9871 .9875 .9878 .9881 .9884 1.9887 9890 2.3 .9893 9896 .9898 9901 9904 .9906 9909 .9911 .9913 9916 2.4 9918 9920 .9922 9925 9927 9929 9931 9932 9934 .9936 2.5 .9938 9940 .9941 .9943 .9945 .9946 .9948 .9949 .9951 :9952 2.6 .9953 9955 9956 .9957 .9959 .9960 .9961 1.9962 9963 .9964 2.7 .9965 .9966 .9967 .9968 .9969 .9970 .9971 .9972 .9973 .9974 2.8 .9974 .9975 9976 .9977 .9977 9978 .9979 .9979 .9980 .9981 2.9 .9981 .9982 .9982 .9983 9984 .9984 .9985 1.9985 9986 9986 3.0 9987 9987 9987 .9988 9988 9989 .9989 .9989 9990 9990