THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING:
On average,an RV sales lot sells six RVs per month.Assume the number of sales of RVs per month follows the Poisson distribution.
-What is the probability that more than three RVs are sold next month?
A)0.8488
B)0.7350
C)0.9826
D)0.7149

Question

Quizplus · Accepted Answer

We can use the Poisson distribution formula P(x>3)=1-P(x<=3). Using a Poisson calculator, we find that P(x<=3)=0.1512. Therefore, P(x>3)=1-0.1512=0.8488.