Solution of problem N2316 Laplace probability theory

Solution of problem N2316 Laplace probability theory

2316. On average, 30% of students take an exam in one discipline for grades "good" and "excellent." What is the likelihood that of 100 people such assessments will be received; a) 40 people; b) from 20 to 40 people. Find the most probable number of students out of 100 who successfully passed the exam.

Additional information:

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