Find the standard deviation of the Poisson random variable. Round to three decimal places.
-Suppose X has a Poisson distribution with parameter $\lambda$ = 10.620. Find the standard deviation of X.
A)10.620
B)5.310
C)3.259
D)112.784

Question

Find the standard deviation of the Poisson random variable. Round to three decimal places.
-Suppose X has a Poisson distribution with parameter $\lambda$ = 10.620. Find the standard deviation of X. 
A)10.620
B)5.310
C)3.259
D)112.784

Quizplus · Accepted Answer

The standard deviation of a Poisson random variable with parameter $\lambda$ is the square root of $\lambda$. Thus, $\sqrt{10.620} \approx 3.259$.

Find the Standard Deviation of the Poisson Random Variable λ\lambdaλ = 10620 Find the Standard Deviation of X

Find the Standard Deviation of the Poisson Random Variable $\lambda$ = 10620 Find the Standard Deviation of X