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

question 127

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 between 0.20 and 0.35 is

• A) 0.1867.
• B) 0.7776.
• C) 0.8133.
• D) 0.9633.

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Definitions:

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The exchange of goods or services between parties without the use of money as a medium of exchange.

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The fraction of deposits that banks are required to hold in reserve and not lend out, often set by central banks to control the money supply.

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