Question 6.431

9. Aircraft Fatalities. The mean number of fatalities per crash of small aircraft in California is 1.65. Let refer to the number of fatalities per crash. Find the following probabilities:

  1. Probability that

(Source: Aviation Accident Data and Synopses, National Transportation Safety Board, 2014, http://www.ntsb.gov/_layouts/ntsb.aviation/index.aspx.)

6.99.9

(a) 0.3169 (b) 0.1920 (c) 0.7703 (d) 0.2297