Question

In PERT, the distribution of activity time is assumed to be

• A. Normal
• B. Gamma
• C. Exponential
• D. Beta

Answer 1

The correct option is D Beta

In PERT, activity, time is assumed to be Beta distribution and project is assumed to be normal distribution.


$\text{Where, a or}{t}_0=\text{optimistic time}$

$t_{E}or\mu =\text{mean time or expected time}$

$t_{m}or\mu =\text{most likely time}$

$t_{p}orb=\text{pessimistic time}$

$\text{Expected or mean time,}$

$t_{E}or\mu =\frac{t_0+4t_m+t_p}{6}=\frac{a+4m+b}{6}$