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please give me step by step solution. a. Draw the network diagram by Arrow-on-Node (AON) method. Calculatethe expected time and variance for each activity. b.

please give me step by step solution. a. Draw the network diagram by Arrow-on-Node (AON) method. Calculatethe expected time and variance for each activity. b. Calculate the activity slacks and determine the critical path using theexpected 1 answer

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