# Exercise 30 (Sect. 2.3) gave the pmf of Y, the number of traffic citations for a randomly selected..

Exercise 30 (Sect. 2.3) gave the pmf of Y, the number of traffic citations for a randomly selected individual insured by a company. What is the probability that among 15 randomly chosen such individuals (a) At least 10 have no citations? (b) Fewer than half have at least one citation? (c) The number that have at least one citation is between 5 and 10, inclusive? Twenty percent of all telephones of a certain type are submitted for service while under warranty. Of these, 60% can be repaired, whereas the other 40% must be replaced with new units. If a company purchases ten of these telephones,

Exercise 30 (Sect. 2.3) gave the pmf of Y, the number of traffic citations for a randomly selected individual insured by a company. What is the probability that among 15 randomly chosen such individuals (a) At least 10 have no citations? (b) Fewer than half have at least one citation? (c) The number that have at least one citation is between 5 and 10, inclusive? Twenty percent of all telephones of a certain type are submitted for service while under warranty. Of these, 60% can be repaired, whereas the other 40% must be replaced with new units. If a company purchases ten of these telephones, what is the probability that exactly two will end up being replaced under warranty?

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