This site is dedicated to the aspirants of competitive exams SSC, UPSC, Railways, Postal Assistants, Bank, GATE and NET
Answer & Explanation
Answer: Option [C]
p is the number of cars per minute passing through a certain road junction.
The random variable P follows Poisson distribution with mean 3.
So, Prob(P = r)=
We have to determine probability of observing fewer than 3 cars.
Prob(P=0) + Prob(P=1) + Prob(P=2)