4. For the activity on arrow network information given below: a. Set up a table and without drawing the network diagram, compute the four schedule dates (ESD, EFD, LSD, LFD) and the four floats (TF, FF, INTF, INDF). b. Identify the activities on the critical path and the project duration. 30 35 ij ACT DUR 5 10 S 4 5 15 R 3 10 20 A 5 10 25 E 10 30 d1 15 30 G 15 35 B 1 20 40 d2 20 60 L 2 25 40 K 2 25 45 d3 30 45 3 WONNO NON w i j ACT DUR 50 H 6 35 45 d4 0 55 J 4 40 65 M 6 45 65 d5 0 45 70 T 3 65 w 3 50 70 d6 0 55 70 X 5 75 N 6 65 75 P 4 v 4 50 (25 points) 60 70