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Mathematics, 18.02.2021 14:00 saurav76

Public Safety: 911 Calls The Denver Post reported that a recent audit of Los Angeles 911 calls showed that 85% were not emergencies. Suppose the 911 operators in Los
Angeles have just received four calls.
a) What is the probability that all four calls are, in fact, emergencies?
b) What is the probability that three or more calls are not emergencies?
c) Quota Problem How many calls 'n' would the 911 operators need to answer to be 96%
(or more) sure that at least one call is, in fact, an emergency?

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