Twenty-five percent of all automobiles undergoing an emissions inspection at a certain inspection station fail the inspection. (Round your answers to three decimal places.) (a) Among 15 randomly selected cars, what is the probability that at most 5 fail the inspection? (b) Among 15 randomly selected cars, what is the probability that between 5 and 10 (inclusive) fail to pass inspection? (c) Among 25 randomly selected cars, what is the mean value of the number that pass inspection?
Twenty-five percent of all automobiles undergoing an emissions inspection at a certain inspection station fail the inspection. (Round your answers to three decimal places.) (a) Among 15 randomly selected cars, what is the probability that at most 5 fail the inspection? (b) Among 15 randomly selected cars, what is the probability that between 5 and 10 (inclusive) fail to pass inspection? (c) Among 25 randomly selected cars, what is the mean value of the number that pass inspection?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Question
Twenty-five percent of all automobiles undergoing an emissions inspection at a certain inspection station fail the inspection. (Round your answers to three decimal places.)
(a)
Among 15 randomly selected cars, what is the probability that at most 5 fail the inspection?
(b)
Among 15 randomly selected cars, what is the probability that between 5 and 10 (inclusive) fail to pass inspection?
(c)
Among 25 randomly selected cars, what is the mean value of the number that pass inspection?
Among 25 randomly selected cars, what is the standard deviation of the number that pass inspection?
(d)
What is the probability that among 25 randomly selected cars, the number that pass is within 1 standard deviation of the mean value?
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VIEWStep 2: (a) Calculate the probability P( at most 5 fail the inspection)
VIEWStep 3: (b) Calculate the probability that between (5-10) cars fail to pass the inspection.
VIEWStep 4: (c) Calculate the mean and standard deviation
VIEWStep 5: (d) Calculate the probability that car pass the inspection within 1 standard deviation from mean:
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