Your Best Friend Takes an IQ Test and Tells You

question 105

Multiple Choice

Your best friend takes an IQ test and tells you that s/he scored "average." Generalizing from the normal distribution of IQ scores, you know that your friend's score

• A)was below 100.
• B)was above 100.
• C)was 100.
• D)fell somewhere between 85 and 115.
• E)fell somewhere between 115 and 130.

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Definitions:

Aptitude Tests

Standardized tests designed to measure an individual's potential to acquire skills or knowledge.

Wilcoxon Signed-Rank Test

A non-parametric test that compares two related samples or matched pairs to assess whether their population mean ranks differ.

Test Statistic

A calculated value from sample data used in a hypothesis test to determine whether to reject the null hypothesis.

Critical Value

A critical value is a threshold or cut-off value that defines regions where the test statistic leads to the acceptance or rejection of the null hypothesis in hypothesis testing.