Question

Let x be a binomial random variable with n=6,p=0.3. Find the following value. (Round your answer to three decimal places.) σ=npq​ You may need to use the appropriate appendix table or technology to answer this question.

Answer 1

1.26

Explanation:

σ=npq is the formula to compute the standard deviation of a binomial distribution.

The value of q is simply 1-p=1-0.3=0.7, so:

σ = npq = 6(0.3)(0.7) = 6(0.21) = 1.26