Suppose that an automobile parts wholesaler claims that .5 percent of the car batteries in a shipment are defective. A random sample of 200 batteries is taken, and four are found to be defective. (1) Use the Poisson approximation discussed in Exercise 5.35 to find the probability that four or more car batteries in a random sample of 200 such batteries would be found to be defective, if in fact the wholesaler’s claim is true. (2) Do you believe the claim? Explain.
Answer to relevant QuestionsSuppose that x has a hypergeometric distribution with, , and . Find: a. p ( x = 0) b. p ( x = 1) c. p ( x = 2) d. p ( x = 3) e. p ( x = 4) f. p ( x ≥ 2) g. p ( x < 3) h. p ( x > 1) Let x be the yearly proportional return for stock C, and let y be the yearly proportional return for stock D. If µx =11, µy =09, σx =17, σy =17, and σ2xy =0412, find the mean and standard deviation of the portfolio ...Suppose that the number of accidents occurring in an industrial plant is described by a Poisson process with an average of 1.5 accidents every three months. During the last three months, four accidents occurred. a. Find the ...Use the estimated probability distribution in Exercise 5.8 to calculate μ σ2x , and. σx Let x be a normally distributed random variable having mean μ = 30 and standard deviation σ = 5. Find the z value for each of the following observed values of x: a. x = 25 b. x = 15 c. x = 30 d. x = 40 e. x = 50 In ...
Post your question