Accident Exact Probability Model

Statistics
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There is an estimate that the typical18-30yo driver has an accident w/6.5% probability of at least one police-reported car accident last year. If we study overnight medical interns,then among 20 interns,5 report having a car accident last year. The interns have the same risk of having a car accident as a typical 18-30 yo. Use an exact probability model w/ the 6.5% probability of car accidents, to assess if there is high number of car accidents among these interns compared to the typical18-30 yo

Oct 1st, 2015

Thank you for the opportunity to help you with your question!

The expected number of accidents for 20 typical18-30 yo = np = 20*.065 = 1.3 round up to 2 . 

Therefore 5 accidents among the 20 interns is high compared to typical18-30 yo.

The probability distribution used is the binomial distribution which is a discrete or exact distribution.


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Oct 1st, 2015

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