To Ensure That She Has No Germs on Her Hand

question 15

Multiple Choice

To ensure that she has no germs on her hand, Shelly feels the overwhelming need to ritualistically wash her hands, as many as 200 to 250 times a day. Her behavior is best described as ______.

• A) an obsession
• B) a delusion
• C) a habit
• D) a compulsion

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Definitions:

Statistically Significant

An observed effect so large that it would rarely occur by chance, indicating that the findings from the data are likely not due to random variation.

ANOVA Null Hypothesis

In Analysis of Variance, the null hypothesis that states there are no mean differences among the groups being compared.

Test Statistic

This is a quantity, derived from sample data, that can be used in statistical hypothesis testing to decide whether to reject the null hypothesis.

Degrees of Freedom

This refers to the number of independent values or quantities that can vary in an analysis without breaking any constraints.