Solution of problem N324 Laplace probability theory

Solution of problem N324 Laplace probability theory

324. On average, 10% of the depositors of some branch of Sberbank are pensioners. Find the probability that of 300 depositors of this bank:
A) pensioners are 40,
B) pensioners will be not less than 265.

Additional information:

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

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