The number of traffic accidents that occurs on a particular ...

[berenicecastro]

The number of traffic accidents that occurs on a particular stretch of road during a month follows a Poisson distribution with a mean of 7.7.
 
  Find the probability that less than two accidents will occur on this stretch of road during a randomly selected month.

Question 2

A ________ is a variable that can assume only a countable number of values. (Choose the best possible answer.)
 
  A) probability distribution B) discrete random variable
  C) random variable D) continuous random variable

[babybsemail]

Answer to Question 1

Let x = the number of accidents that occur on the stretch of road during a month.
Then x is a Poisson random variable with  = 7.7.

P(x < 2 ) = P(x = 0 ) + P(x = 1 ) = 0.003940

Answer to Question 2

B

[berenicecastro]

Excellent

[daiying98]

Thanks for the timely response, appreciate it