The distribution curve for the time taken in to complete each activity of a project resembles a beta-distribution curve and the distribution curve for the time taken to complete entire project ( consisting of several activities) in general resembles a normal distribution curve.

PERT Analysis and Completion Time Probability Distribution

PERT (Program Evaluation and Review Technique) analysis is a project management tool used to determine the expected completion time of a project. It is based on the assumption that the completion time of a project is uncertain and can vary due to various factors such as delays, resource availability, and unforeseen events.

Probability Distribution in PERT Analysis

In PERT analysis, completion time is represented by a probability distribution. The probability distribution is used to determine the expected completion time of the project and the probability of completing the project within a given time frame.

There are three types of probability distributions that are commonly used in PERT analysis:

1. Normal Distribution: The normal distribution is a bell-shaped curve that is symmetrical around the mean. It is used when the completion time is affected by a large number of independent factors that are assumed to be normally distributed.

2. Beta Distribution: The beta distribution is a continuous probability distribution that is used when the completion time is affected by a limited number of independent factors. It is often used when there is uncertainty about the shape of the probability distribution.

3. Gamma Distribution: The gamma distribution is a continuous probability distribution that is used when the completion time is affected by a series of independent factors. It is often used when the distribution is skewed to the right.

Correct Answer

The correct answer to the question is option 'B', which is the normal distribution. The normal distribution is the most commonly used probability distribution in PERT analysis, as it assumes that the completion time is affected by a large number of independent factors that are normally distributed.

Beta distribution is my ans... but here normal_distribution is given in answer