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4028. The shop receives similar products from three pla 2019

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Description

4028. The shop receives similar products from three plants, with the i-th (i = 1,2,3) plant supplying mi percent of the products (m1 = 60%, m2 = 10%, m3 = 30%). Among the products of the i-th plant, ni percent are first-rate (80%, 90%, 80%). Bought one product. It turned out to be first-rate. Determine the probability that the purchased product is released by the 3rd plant.

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Additional information

Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)

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