Решение задачи N3707 теория вероятностей Байеса

3707. Two typists type the same text on different typewriters. The probability that the first typist will make a mistake is 0.05; for the second typist, this probability is 0.1. An error was found while checking the text. Find the probability that the first typist made a mistake.

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