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

question 131

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

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