Решение задачи N4124 теория вероятностей Лапласа

4124. On average 80% of first-class products are rolled off the conveyor. How many products must be taken so that with a probability of 0.996 the deviation of the relative frequency of first-class products in them from the probability p = 0.8 in absolute value does not exceed 0.02?

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