A University Administrator Expects That 25% of Students in a Core

Multiple Choice

A university administrator expects that 25% of students in a core course will receive an A. He looks at the grades assigned to 60 students. The probability that the proportion of students who receive an A is not between 0.20 and 0.30 is ________.

A) 0.1867
B) 0.3711
C) 0.6266
D) 0.8133