Solution of problem N1170 Laplace probability theory

Solution of problem N1170 Laplace probability theory

1170. The probability of an industrial metal content in each ore sample is 0.7. Find the probability that among 400 such selected samples of ore, the number of samples with an industrial metal content will be: a) 275 samples; b) at least 275 samples.

Additional information:

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

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