Solution of problem N1427 Bernoulli probability theory

Solution of problem N1427 Bernoulli probability theory

1427. The probability of premature burning of the lamp is 0.02. Find the probability that at least 4 out of 6 lamps will burn prematurely. Find the probability that out of 100 electric lamps will burn out:
a) three lamps;
b) at least one lamp.

Additional information:

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

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