During the 18 years from 1995 through 2012 there were
During the 18 years from 1995 through 2012, there were 144 hurricanes in the Atlantic basin. Assume that hurricanes are independent and the mean has not changed.
a) What is the mean number of major hurricanes per year?
b) What is the standard deviation of the annual frequency of major hurricanes?
c) What is the probability of having a year with no major hurricanes?
d) What is the probability of going three years in a row without a major hurricane?
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