Решение задачи N3750 теория вероятностей полная вероятн

3750. From the first machine to assembly receives 30%, from the second - 70% of all parts. Among the parts of the first machine 90% standard, the second - 80%. Then the probability that the item taken at random will be standard is equal to ...

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