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Maritime Shipbuilding is set to start building the first of six ships and to finish this ship within one year. Since they have little experience with this particular design (but can draw on a long history of building other ships), they have decided to approach the building of this first vessel as a project. (The experience gathered will be applied towards building the remaining five ships, so those will be built using a somewhat different mode of production.) Production of the first ship has been broken down into the following activities, with their precedence relations and three time estimates Time estimates (weeks Most ikely Activity Predecessors Opt Pess ExpectedStd.dev.Var Variance 10 16 20 25 14 25 12 19 6 10 1.5 18 2.333333 5.444444 1.5 12.5 1.833333 3.361111 4 0.333333 0.111111 8.5 2.25 B,C 18 6.5 2.25 D,E 12

(a) Complete the expected duration, standard deviation and variance for activities A and B and enter them into the table (provided above).

(b) Draw the Activity-on-node (AON) including the Start & Finish diagram and use the expected activity durations to complete a forward and backward pass (show calculations for ES,EF,LS,LF), create a table and show your work.

Answer 1