Решение задачи N3765 теория вероятностей полная вероятн

3765. From the first machine to the assembly receives 40% of parts, the remaining 60% from the second. The probability of manufacturing a defective part for the first and second machines is respectively 0.01 and 0.04. Find the probability that the item received at the assembly at random will be defective.

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