Mathematics, 23.07.2021 01:10, hilljade45

a lot containing 7 components is sampled by a quality inspector; the lot contains 4 good components and 3 defective components. A sample of 3 is taken by the inspector. Find the expected value of the number of good components in this sample

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a lot containing 7 components is sampled by a quality inspector; the lot contains 4 good components...