"IQ Scores Based on the Wechsler Adult Intelligence Scale Are

question 32

Multiple Choice

"IQ scores based on the Wechsler Adult Intelligence Scale are assumed to be normally distributed with a mean of 100 and a standard deviation of 15." What percentage of adults have IQ scores between 95 and 110?

• A) 12.93%
• B) 25.14%
• C) 37.07%
• D) 37.79%

---

Definitions:

Chi-Squared Test Statistic

A statistical measure used to evaluate the differences between observed and expected frequencies in one or more categories.

Observed Frequencies

The actual number of occurrences of each possible outcome of a variable recorded in a dataset, often used in the context of chi-square tests and frequency distributions.

Expected Frequencies

The anticipated count of occurrences across different categories in a probability distribution based on a theoretical model.

Alternative Hypothesis

The hypothesis that suggests there is a significant difference or effect, in contrast to the null hypothesis.