A Student Asked a Statistics Professor If Grades Were Marked

question 7

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 the alternative hypothesis?

• 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:

Introverts

Individuals who tend to be inward-turning, often focusing on internal thoughts and feelings rather than seeking external stimulation.

High Self-esteem

The positive valuation that one has of oneself, characterized by feelings of confidence and self-respect.

Extraverts

Individuals who are outgoing, sociable, and derive energy from being around others.

Self-censorship

The act of withholding or altering one's expression or opinion to avoid offending others or diverging from a group norm.