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Of all the articles in a box, 80% are satisfactory, while 20% are not. The probability of obtaining exactly five good items out of eight randomly selected articles is |
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Answer» `0.003` that it is an unlimited number. The probability of picking 5 satisfactory items (and THEREFORE 3 unsatisfactory ones) is`(8.0 )^(5) (0.2)^(3)`, and there are `8/5` way of doing this. Therefore, the desired probability is `8/5(8.0)^(5) (0.2)^(3)= 0.147` |
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