Allied & ICAR Exam Bank • ALLIED_0795 MCQ • 1 Mark

Section 1: Engineering Mathematics

Probability and Statistics

Subtopic: Poisson, normal and binomial distributions

Question Statement:

The variance of a binomial distribution with parameters $n$ (number of trials) and $p$ (probability of success) is:

Options:

  • (A) $n p (1 - p)$
  • (B) $n p$
  • (C) $\sqrt{n p (1 - p)}$
  • (D) $n (1 - p)$

Answer Key:

A

Step-by-Step Solution & Explanation

For a binomial distribution, the mean is $\mu = n p$ and the variance is $\sigma^2 = n p q = n p (1 - p)$.
← Previous (ALLIED_0794) Next (ALLIED_0796) →

Practice In Authentic CBT Exam Interface

Test your skills under authentic timed conditions with live scoring and AIR percentile ranking.

Launch CBT Mock Test