A Student Asked a Statistics Professor If Grades Were Marked $\alpha$

question 110

Multiple Choice

A student asked a statistics professor if grades were marked "on the curve." The professor decided to give the student a project to determine if last year's statistics grades were normally distributed. The professor told the student that last year's mean mark was 70 with a standard deviation of 10 and to use the following results. What is your decision if $\alpha$ = 0.05?

• A) The letter grades are evenly distributed.
• B) The letter grades are not evenly distributed.
• C) The letter grades are normally distributed.
• D) The letter grades are not normally distributed.
• E) The letter grades are unfairly distributed.

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Definitions:

Law of Effect

A principle in psychology stating that behaviors followed by favorable consequences become more likely, while behaviors followed by unfavorable consequences become less likely.

Behavioral Perspective

A view in psychology focusing on observable behaviors and the ways in which they are learned through interactions with the environment.

Operant Conditioning

A method of learning that occurs through rewards and punishments for behavior, thereby influencing the likelihood of that behavior occurring again.

Negative Consequences

Unfavorable results or outcomes that arise as a result of an action, decision, or behavior, potentially causing harm or disadvantage.