Consider the following table: ACTIVITY PREC. ACT. TIME ESTIMATES (days) to tml tp te A --- 3 3 3 B A 2 4 6 C A 1 4 7 D A 4 5 6 E B 7 7 7 F D 1 3 5 G E, C, F 3 5 7 Spread out the table, to, tml, tp, te is in order 1. Construct a PERT network. (20 points) [NOTE: This is the most crucial part of the exercise. Make sure you have the correct network before proceeding to the next sections.] 2. By using ES, EF, LF, LS, find the slack of each activity and the critical path. (15 points) 3. Find the completion time ( ) and the standard deviation () for the project round off the standard deviation to the nearest hundredth: USE two decimal places. (20 points) 4. What is the completion time at 95% confidence levels? (15 points)