Решение задачи N1060 теория вероятностей Лапласа

1060. The probability of detecting at least one defective product with an independent verification of four items is 0.3439. What is the probability that when checking a batch of 100 items, it will be found:
a) 10 defective items;
b) not more than 15 defective items?

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