Решение задачи N1763 теория вероятностей Лапласа

1763. The probability of a successful passing of an exam by each student of a correspondence faculty is 0.9. How many students need to take an exam so that with a probability of 0.98 you could expect that at least 120 students will pass the exam.

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