DPDs Examples.

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Presentation transcript:

DPDs Examples

prepared by: Rose Ann V. Sale 1 Binomial Of all new vehicles of a certain model that are sold, 20% require repairs to be done under warranty during the first year of service. A particular dealership sells 14 such vehicles. What is the probability that fewer than five of them require warranty? What is the probability that more than 2 of the 14 vehicles require warranty repairs? prepared by: Rose Ann V. Sale

prepared by: Rose Ann V. Sale 2 Geometric In a certain manufacturing process it is known that, on the average, 1 in every 100 items is defective. What is the probability that the fifth item inspected is the first defective item found? prepared by: Rose Ann V. Sale

prepared by: Rose Ann V. Sale 3 Hypergeometric A box contains 6 blue marbles and 4 red marbles. An experiment is performed in which a marble is chosen at random and its color is observed, but the marble is not replaced. Find the probability that after 5 trials of the experiment, 3 blue marbles will have been chosen. prepared by: Rose Ann V. Sale

prepared by: Rose Ann V. Sale 4 Negative The probability that a person, living in a certain city, owns a dog is estimated to be 0.3. Find the probability that the tenth person randomly interviews in that city is the fifth one to own a dog. prepared by: Rose Ann V. Sale

prepared by: Rose Ann V. Sale 5 Negative/Geometric Find the probability that a person flipping a coin gets The third head on the seventh flip The first head on the fourth flip prepared by: Rose Ann V. Sale

prepared by: Rose Ann V. Sale 6 Multinomial According to USA Today, of 4 million workers in the general workforce back in 1997, 0.8% tested positive for drugs. Of those positive, 22.5% were cocaine users and 54.4% marijuana users. What is the probability that of 10 workers testing positive, 2 are cocaine users, 5 marijuana users, and 3 users of other drugs? What is the probability that of 10 workers testing positive, all are marijuana users? prepared by: Rose Ann V. Sale