Решение задачи N751 теория вероятностей Лапласа

751. The probability of occurrence of an event in each of the 100 independent trials is constant and equal to 0.8. Find the probability that the event will appear: a) at least 11 times and no more than 87 times; b) at least 11 times; c) not more than 87 times.

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