Poisson Distribution Statistics

[vanitymdl]

Homework Statement

If the number of complaints a dry cleaning establishment receives per day is random variable having the Poisson distribution with λ = 3.3, what are the probabilities that it will receive:

(a) Five complaints altogether on any two given days.

(b) at least 12 complaints altogether on any 3 given days.

Homework Equations

Poisson Distribution

The Attempt at a Solution

 

[Simon Bridge]

Please show us your best attempt so far so we can understand how you are thinking about the problem and where you get stuck. Thanks.