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Author Question: The number of traffic accidents that occurs on a particular stretch of road during a month follows a ... (Read 109 times)

berenicecastro

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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


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babybsemail

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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


berenicecastro

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Reply 2 on: Jul 25, 2018
Great answer, keep it coming :)

Laurenleakan

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Reply 3 on: Yesterday
Gracias!

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