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:

Mood-dependent Memory Effect

The phenomenon where an individual's current mood affects the recall of memories congruent with that mood.

State-Dependent Learning

The phenomenon that recall is easier when the pharmacological state of the person at recall matches his or her pharmacological state during encoding.

Retrieval Processes

The cognitive operations involved in bringing stored information back into consciousness or into active use.

Encoding Variability

The way the encoding of information varies as a function of context.