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Consider the PERT/CPM network with estimated times in weeks shown in the following figure. The project is scheduled to begin on May 1. The three-time estimate approach was used to calculate the expected times and the following table gives the variance for each activity. (a) Give the expected project completion date and the critical path. (Enter your critical path as a comma-separated list.) The expected project completion is weeks from May 1 with a critical path of (b) Based only on the critical path, by what date are you 99% sure the project will be completed? (Round your answer to one decimal place.) weeks from May 1