# 22 Public Safety: 911 Calls The Denver Post reported that a recent audit of 911 calls showed that 85% were not emergencies. Suppose the 911 operators have just received four calls. (a) What is the...

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

Extracted text: # 22 Public Safety: 911 Calls The Denver Post reported that a recent audit of 911 calls showed that 85% were not emergencies. Suppose the 911 operators 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 of more calls are not emergencies? (c) 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?

Jun 07, 2022

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# 22 Public Safety: 911 Calls The Denver Post reported that a recent audit of 911 calls showed that 85% were not emergencies. Suppose the 911 operators have just received four calls. (a) What is the...

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