Решение задачи N236 теория вероятностей Лапласа

236. The probability that a pair of shoes taken at random from the manufactured batch will be of the highest grade is 0.8. What is the probability that among the 500 pairs that came to control, there will be between 400 to 450 pairs of high-grade footwear?

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