Question

In a binomial distribution with n = 10 and p = 0.6, the vanance of the distribution is:

• A. 2.4
• B. 2.86
• C. 3.2
• D. 2.64

Answer 1

Answer: (A)

2.4

Answer 2

The variance of a binomial distribution with $n$ trials and probability of success $p$ is given by the formula $np(1-p)$. Given $n=10$ and $p=0.6$, the variance is $10 \times 0.6 \times (1-0.6) = 10 \times 0.6 \times 0.4 = 2.4$.