Solution of problem N1160 Laplace probability theory

Solution of problem N1160 Laplace probability theory

1160. 800 samples of ore taken. The probability of an industrial metal content in each sample is the same and equal to 0.3. Considering the event, the probability of occurrence of which is 0.997, reliable, find the limits of the number of samples with the industrial content of the metal in the sampled batch of samples.

Additional information:

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