A project involves fourteen (14) activities identified by the code letters A to N. The table below indicates the sequence in which the activities must be undertaken. Construct an "Activity on Arrow" network diagram, for the project. Activity Code letter of any immediately preceding activity or activities A B C D E F G H I J K L M N - - B A A, B A C, E C F F, G, H I K, J J J QUESTION 2 (100 marks) The network for a project is shown below. Activity times, in days, are indicated by the figure that appears under each activity. (i) Analyse the network to determine the earliest and latest event times and the minimum project duration. Indicate the critical path for the project. (25 marks) (ii) What amount of free float is associated with activity 2-6? (5 marks) (iii) Neatly sketch a sequenced bar chart, not a Gantt chart, for the above project with all activities shown at their earliest start times. (25 marks) The number of people required for each activity is shown in the following table. The duration of individual activities cannot be altered by the allocation of additional people, nor may activities be divided into smaller components performed at different times. (iv) Indicate the number of people required on each day of the project with all activities at their earliest start times. (5 marks) (v) By utilizing the floats in the various activities, smooth the daily requirement for people as much as possible. What is the minimum ceiling of people required to complete the project in minimum time? Justify your answer by redrawing the bar chart and indicating the people required on each day. (40 marks) Activity People Required Per Day 1-2 1-3 1-4 1-6 6 4 7 3 2-6 3-5 3-7 4-5 2 1 1 5 4-8 5-9 6-9 7-9 8-9 6 4 3 2 3 QUESTION 3 (70 marks) For the network shown below, the normal and crash durations for the activities in the project, and their associated costs, are shown in the table following. Indicate what activity or activities should be crashed to reduce the project time by: (i) 2 days, and (ii) 4 days Estimate the increased costs that are incurred in each case.