Solution of problem N1543 Laplace probability theory

Solution of problem N1543 Laplace probability theory

1543. The shop has 80 machines working independently of each other. For each machine, the probability of being switched on is 0.9. What is the probability that at some point in time will be included from 60 to 70 machines.

Additional information:

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

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