Решение задачи N1272 теория вероятностей Пуассона

1272. At one enterprise, a female worker serves 500 spindles. The probability that the spindle will break the yarn for a certain period of time is 0.006. Determine the probability that during this time interval: a) 4 breakage of the yarn; b) no more than 5 breakages of yarn.

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