The activities shown in the following table are for the construction of a new hospital in Polokwane. The time estimates are all in months. [TURN OVEF 2.3.1 Determine the expected times and the variance of each project activity. 2.3.2 Based on the expected times, what is the critical path and the expected completion time of the project. 2.3.3 Calculate the project standard deviation. 2.4.4 What is the probability that the project will be completed two weeks after the project completion time