Solution of problem N1295 Poisson probability theory

Solution of problem N1295 Poisson probability theory

1295. The probability that any subscriber will call the switch for an hour is 0.02. The telephone exchange serves 300 subscribers. Find the probability that a switch will be called during a given hour
a) 3 subscribers
b) at least 2 subscribers

Additional information:

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

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