Решение задачи N3584 теория вероятностей

3584. The assembly receives parts from two machines. The first gives 1% of marriage, the second - 0.5%. Find the probability that a defective part will arrive at the assembly, if there are 3,000 total for the assembly from the first machine, 2,000 from the second.

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