Решение задачи N495 теория вероятностей Лапласа

495. At the factory, a worker for a shift produces 399 products. The probability that the part will be of the first grade is 0.72. Find the probability that: a) details of the first grade will be 334 pieces b) details of the second grade will be at least 320 and not more than 366.

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