In a Large Lecture Class, the Professor Announced That the Scores

question 96

Multiple Choice

In a large lecture class, the professor announced that the scores on a recent exam were normally distributed with a range from 51 to 87. Using the Empirical Rule μ ± 3σ to estimate σ, how many students would you need to sample to estimate the true mean score for the class with 90 percent confidence and an error of ±2?

• A)About 17 students
• B)About 35 students
• C)About 188 students
• D)About 25 students

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Definitions:

Stereotypes

Oversimplified and widely held beliefs about the characteristics of particular groups of people.

Prejudicial Emotions

Feelings that are biased or prejudiced, leading to unfair judgments or treatment of others based on preconceived notions rather than individual merit.

Hindsight Bias

The tendency to believe, after an event has occurred, that one would have predicted or expected the outcome, even if it was not predictable.

Groupthink

A psychological phenomenon that occurs within a group of people when the desire for harmony in the group results in an irrational or dysfunctional decision-making outcome.