Answer: True
Step-by-step explanation:
Management scientists developed the Project Evaluation and Review Technique(PERT) and Critical Path Method(CPM) to help organizations plan, schedule and control large projects like building a hospital or construction of a big factory.
The techniques are used in project management to get the duration a project will take before it's completed. The project evaluation and review technique gives room for uncertainty in activity durations through the use of statistical assumptions. In instances where the activity times are not certain, the amount of total time the project will take is normally distributed by considering that the total mean is equal to the addition of the means of all the critical activities.