Решение задачи N620 теория вероятностей Лапласа

620. For the strength tests 600 samples were made. The probability of sample failure due to random defects in its structure at a given load is 0.08. Determine the probability of destruction: a) exactly 50 samples; B) not less than 40 and not more than 65 samples.

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