Mathematics, 21.02.2020 18:00 madisonsan9020
Most sample surveys use random digit dialing equipment to call residential telephone numbers at random. The telephone polling firm Zogby International reports that the probability that a call reaches a live person is 0.25. Calls are independent.
(a) A polling firm places 7 calls. What is the probability that none of them reaches a person?
(b) When calls are made to New York City, the probability of reaching a person is only 0.06. What is the probability that none of 7 calls made to New York City reaches a person?
Answers: 1
Mathematics, 21.06.2019 19:30
If you can solve all of these i will give ! - 4% of 190 - 4% of 162.5 - 4% of 140 - a 4% increase from 155.1 - a 4% increase from 159.8
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Most sample surveys use random digit dialing equipment to call residential telephone numbers at rand...
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