5.45 Cross-Border Drinking Alcohol-related crashes increased in Windsor after bar hours extended, the Windsor Star reported in November 7, 2005. The number of injuries and fatalities from alcohol- related car accidents rose by 45% in Windsor since the Ontario government extended drinking hours to 2 a.m., according to a study by the University of Western Ontario. There were an average of 1.7 alcohol-related traffic casualties a month in Windsor between the hours of 11 p.m. and 3 a.m. before the drinking hours were extended. After the change, the number increased to 2.5. Assume that the average number of fatalities for the current year is still 2.5. What are the probabilities of the following events?

a. There will be two fatalities during the year.

b. Two or more fatalities

c. At most one fatality

d. At least one fatality