Abstract
Abstract The planning process is considered to be one of the most important tasks in our practical life. The project is divided into a number of activities according to the plan. Each activity represents functional process which requires time in order to be carried out. This period of time is considered either limited or probable. The aim of research after studying the probable time of the activities is to find out the suitable distribution for calculating the range of an appropriate of the three uncertain times which include: optimistic, pessimistic and moderate time. As for Beta distribution It was previously considered a four fold parameter for adequate distribution which was used to estimate the average of the activity of triple times. In this research many exceptional problems have been put aside concerning Beta distribution usages one of them is giving four weights to moderate time compared with one Wight which is given to the optimistic time and another is given to pessimistic time. We have also adapted that method on the present practical & we have got an outcome which shows suitability of Two – Sided Power Distribution for time and activates. .
