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Mathematics, 09.11.2019 03:31 gdeorsey

California is hit every year by approximately 500 earthquakes that are large enough to be felt. however, those of destructive magnitude occur, on average, once a year. find a) probability that at least 3 months elapse before the first earthquake of destructive magnitude occurs. b) probability that at least 7 months elapsed before the first earthquake of destructive magnitude occurs knowing that 3 months have already elapsed.
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