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Let be two events that then: (b) (d)
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From a lot of 15 bulbs which include 5 defectives, a sample of 4 bulbs is drawn one by one with replacement. Find the probability distribution of number of defective bulbs. Hence find the mean of the distribution.Question 2
In a shop X, 30 tins of pure ghee and 40 tins of adulterated ghee whichlook alike, are kept for sale while in shop Y, similar 50 tins of pure gheeand 60 tins of adulterated ghee are there. One tin of ghee is purchasedfrom one of the randomly selected shops and is found to be adulterated.Find the probability that it is purchased from shop Y. What measuresshould be taken to stop adulteration ?Question 3
Five bad oranges are accidently mixed with 20 good ones. If four oranges are drawn one by one successively with replacement, then find the probability distribution of number of bad oranges drawn. Hence find the mean and variance of the distribution.Stuck on the question or explanation?
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Question Text | Let be two events that then: (b) (d) |
Answer Type | Video solution: 1 |
Upvotes | 150 |