Question: A project has three back to back activities that must be completed sequentially to complete te project. Let the activities be designated Job1, Job2 and

A project has three back to back activities that must be completed sequentially to complete te project. Let the activities be designated Job1, Job2 and Job3. The times taken to complete the jobs are normally distributed and their means and standard deviations are as follows (all times are in hours): Jobt: mean 12; standard deviation, 4 Job2: mean 18, standard deviation, 7 Job3; mean 55; standard deviation, 14 Workers at these jobs are paid at different rates, and those are as follows: Jobt: $20/hr Job 2: $30/hr Job3: $40/hr The mean cost of a single such project is $ The standard devation of a single such project is = $ |(Round to TWO places of decimal) If your company is to complete sixteen such projects, then the mean total cost of sixteen projects token together is $ The standard of total sixteen projects taken together is $ (Round to TWO places of decimal)

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