Please complete the questions with handwritten formulas, not computer formulas

No. Activity Predecessor amb 4 5 12 A Product design R&D 1 1.5 5 B Marketing planning research A 1 2 3 4 C Rooting (Plant Engineering) A 3 4 11 D Develop prototype models A | 2 3 4 E Provide marketing broker 1.5 2 2.5 F Estimated cost (industrial engineer) D 1.5 3 4.5 G Test the original products BE 2.5 3.5 7.5 H Census marketing A 2 3 4 E Provide marketing broker 1.5 2 2.5 F Estimated cost (industrial engineer) D 1.5 3 4.5 Test the original products B, E 2.5 3.5 7.5 H Census marketing H 1.5 2 2.5 Test report and the price F,G,1 1 2 3 The final report a) Construct a project network. b) Determine the project completion time, the variances, and the critical path. c) Determine the probability that the project will be completed within 20 weeks. No. Activity Predecessor amb 4 5 12 A Product design R&D 1 1.5 5 B Marketing planning research A 1 2 3 4 C Rooting (Plant Engineering) A 3 4 11 D Develop prototype models A | 2 3 4 E Provide marketing broker 1.5 2 2.5 F Estimated cost (industrial engineer) D 1.5 3 4.5 G Test the original products BE 2.5 3.5 7.5 H Census marketing A 2 3 4 E Provide marketing broker 1.5 2 2.5 F Estimated cost (industrial engineer) D 1.5 3 4.5 Test the original products B, E 2.5 3.5 7.5 H Census marketing H 1.5 2 2.5 Test report and the price F,G,1 1 2 3 The final report a) Construct a project network. b) Determine the project completion time, the variances, and the critical path. c) Determine the probability that the project will be completed within 20 weeks