Solution of problem N1127 Laplace probability theory

Solution of problem N1127 Laplace probability theory

1127. The probability that the buyer needs men´s shoes of the 41st size is 0.2. If there are 10,000 buyers, then what is the probability of 0.9973 you can expect the greatest deviation from the probability of 0.2 percent of those buyers who need shoes of the 41st size?

Additional information:

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