AT&T was running commercials in 1990 aimed at luring back customers who had switched to one of the other long-distance phone service providers. One such commercial shows a businessman trying to reach Phoenix and mistakenly getting Fiji, where a half-naked native on a beach responds incomprehensibly in Polynesian. When asked about this advertisement, AT&T admitted that the portrayed incident did not actually take place but added that this was an enactment of something that “could happen.”12 Suppose that one in 200 long-distance telephone calls is misdirected. What is the probability that at least one in five attempted telephone calls reaches the wrong number? (Assume independence of attempts.) Refer to the information in the previous problem. Given that your longdistance telephone call is misdirected, there is a 2% chance that you will reach a foreign country (such as Fiji). Suppose that I am now going to dial a single long-distance number. What is the probability that I will erroneously reach a foreign country?
AT&T was running commercials in 1990 aimed at luring back customers who
had switched to one of the other long-distance phone service providers. One such
commercial shows a businessman trying to reach Phoenix and mistakenly getting
Fiji, where a half-naked native on a beach responds incomprehensibly in Polynesian.
When asked about this advertisement, AT&T admitted that the portrayed incident
did not actually take place but added that this was an enactment of something that
“could happen.”12 Suppose that one in 200 long-distance telephone calls is misdirected. What is the
the wrong number? (Assume independence of attempts.)
Refer to the information in the previous problem. Given that your longdistance telephone call is misdirected, there is a 2% chance that you will reach a foreign country (such as Fiji). Suppose that I am now going to dial a single long-distance
number. What is the probability that I will erroneously reach a foreign country?
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