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

question 54

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:

Impulse Control

The ability to resist or delay an impulse, drive, or temptation to act.

Conduct Disorders

A range of antisocial types of behavior displayed in childhood or adolescence, including aggression towards people or animals, destruction of property, and serious violations of rules.

Somatic Symptom

Physical symptoms that are distressing and may not have a fully understood medical explanation, often associated with psychological conditions.

Related Disorders

Diseases or conditions that have similar causes, characteristics, or symptoms to a primary disorder, often considered in differential diagnosis.