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  3. a.) the j.o. supplies company buys calculators fro

a.) The J.O. Supplies Company buys calculators from a Korean supplier. The probability of a defective...

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Statistics

a.) The J.O. Supplies Company buys calculators from a Koreansupplier. The probability of a defective calculator is 30%. If 14calculators are selected at random, what is the probability thatmore than 6 of the calculators will be defective?

b.) An important part of the customer service responsibilitiesof a cable company relates to the speed with which trouble inservice can be repaired. Historically, the data show that thelikelihood is 0.70 that troubles in a residential service can berepaired on the same day. For the first six troubles reported on agiven day, what is the probability that: Fewer than 3 troubles willbe repaired on the same day?


c.) Given the length an athlete throws a hammer is a normal randomvariable with mean 60 feet and standard deviation 2.5 feet, what isthe probability he throws it between 55 feet and 65 feet?

d.) If x is a binomial random variable where n = 100 and p =0.30, find the probability that x is more than 25 using the normalapproximation to the binomial. Check the condition for continuitycorrection.

Answer & Explanation Solved by verified expert
3.7 Ratings (432 Votes)
Part aX B n 14 P 03 P X 6 1 P X 25 Using    See Answer
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