Решение задачи N1159 теория вероятностей Лапласа

1159. The probability of an industrial metal content in each ore sample is 0.4. Assuming that the event, the probability of which is 0.997, reliably, find the limits of the number of samples with an industrial metal content among 1000 samples.

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