Решение задачи N3637 теория вероятностей Байеса

3637. Two workers produced the same number of parts. The probability of manufacturing a defective part for the first worker is 0.1, and for the second - 0.15. Find the probability that the item taken at random is suitable. Find the probability that a suitable part is made by the first worker.

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