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3976. One-type products from three plants are on sale. 2019

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Description

3976. One-type products from three plants are on sale. Marriage is respectively 2%, 3%, 7%. The first plant supplies 40% of production, the second - 25%, the third - 35%. A single item is removed at random.
1) What is the probability to purchase a defective product.
2) Which plant most likely produced an acquired good-quality product.

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Additional information

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

$ 0.47