Решение задачи N4270 теория вероятностей полная вероятн

4270. Two factories produce the same glass for car headlights. The first factory produces 25% of these glasses, the second - 75%. The first factory produces 4% of defective glasses, and the second - 2%. Find the likelihood that a glass accidentally purchased in a store will be defective.

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