Author Question: The number of traffic accidents that occurs on a particular stretch of road during a month follows a ... (Read 122 times)

berenicecastro · **on:** Jul 25, 2018

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 · **Reply #1 on:** Jul 25, 2018

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