8)
Let Y denote the number of defective fuses. Then, Y~Bin(n=4,p=0.10)
So,
a)
Required probability = P(Y=1) =
b)
Required probability =
Now,
Problem 8 A large box of fuses contains 10% defectives. Four fuses are randomly selected from...
Problem 6 Five applicants for a job are ranked according to ability, with being the best. These rankings are unknown to an employer, who simply hires two applicants at random. What is the probability that this employer hires exactly one of the two best applicants? Problem 7 Five motors ( through 5) are available for use, and motor 2 is defective. Motors 1 and 2 come from supplier I, and motors 3, 4, and 5 come from supplierIL. Suppose two...
Suppose that a box of electrical fuses contains 3% defectives, and a sample of 100 fuses was obtained from the box. a. Find the probability of obtaining less than 2 defective fuses. (Round to four decimal places.) b. Find the expected number of defective fuses in the sample. (Round to the nearest whole number.)
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2.31 A boxcar contains six complex electronic systems. Two of the six are to be randomly selectec for thorough testing and then classified as defective or not defective. a If two of the six systems are actually defective, find the probability that at least one of the two systems tested will be defective. Find the probability that both are defective. If four of the six systems are actually defective, find the probabilities indicated in part (a) b
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