Solution of problem N4236 Laplace probability theory

Solution of problem N4236 Laplace probability theory

4236. According to a survey, it was found that 45% of buyers required women´s shoes of size 38. It is known that an average of 190 people visit a store every day. Find: a) the most likely number of buyers who need size 38 women´s shoes and calculate the probability corresponding to this event, b) the likelihood that size 38 shoes will need at least 80 customers.

Additional information:

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