Solution of problem N1272 Poisson probability theory

Solution of problem N1272 Poisson probability theory

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.

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