Suppose a Poisson probability distribution with $\lambda = 8.3$ provides a good approximation of the distribution of a random variable $x$. Find $\sigma$ for $x$.
A) $8.3$
B) $68.89$
C) $\sqrt { 8.3 }$
D) $4.2$

Question

Quizplus · Accepted Answer

In a Poisson distribution, the standard deviation $\sigma$ is the square root of the mean $\lambda$. Therefore, $\sigma = \sqrt{8.3}$.

Suppose a Poisson Probability Distribution With λ=8.3\lambda = 8.3λ=8.3 Provides a Good Approximation of the Distribution of a Random

Suppose a Poisson Probability Distribution With $\lambda = 8.3$ Provides a Good Approximation of the Distribution of a Random