Решение задачи N3609 теория вероятностей Байеса

3609. Among the parts arriving at the assembly from the first machine, 0.2% are rejected, from the second - 0.3%, from the third - 0.25%, from the fourth - 0.4%. Their performance is 1: 3: 2: 4, respectively. Taken at random item was standard. Find the probability that it is made on the fourth machine.

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