Poisson Distribution

Poisson is a __________ probability distribution

• random

• discrete

• continuous

What is the parameter of Poisson distribution?

• $\mu$

• $\sigma$

• $\lambda$

Poisson distribution expresses the probability of events occurring in a fixed interval of _______ or _______.

• time, distance

• time, space

• distance, space

If the mean of a Poisson distribution is 4,what is its variance?

• 4

• 8

• 16

The mean number of accidents per month at a certain intersection is 3.What is the probability that in any given month exactly 4 accidents will occur at this intersection?

• 0.081

• 0.672

• 0.168

A certain maternity wind has a mean number of 6 babies born a day. what is the probability of 7 babies being bornin this maternity wing on any given day?

• 0.1377

• 0.1490

• 0.8571

If X $\sim$   $P_o$  (1.8), find P(2<X<5)

• 0.5008

• 0.2590

• 0.2330

Paul expected to receive 4 emails in a week.Find the probability of receiving 6 emails for the next 2 weeks?

• 0.1221

• 0.1041

• 0.0531