Решение задачи N3691 теория вероятностей полная вероятн

3691. Two automatic machines make parts which arrive on the general conveyor. The probability of obtaining a non-standard part on the first machine is 0.075, and on the second, 0.09. The performance of the second machine is twice that of the first. Find the probability that a piece taken from the conveyor is non-standard.

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