Andrew Washes His Hands 100 or More Times Each Day

question 8

Multiple Choice

Andrew washes his hands 100 or more times each day.The constant washing causes the skin on his hands to dry and crack,yet he continues to engage in this behaviour.Andrew's behaviour is an example of

• A)an obsession.
• B)agoraphobia.
• C)a compulsion.
• D)a phobia.

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Definitions:

Matched Pairs

A research design in statistics where pairs of subjects are matched based on certain criteria, and differences within each pair are analyzed.

Test Statistic

A calculated value used in a statistical test to decide whether to support or reject the null hypothesis.

One-sample T Test

A statistical test used to compare the mean of a single sample to a known mean or expected value, to see if there is a significant difference.

Normal Population

A population with a distribution that follows the normal (Gaussian) curve, where most measurements are centered around the mean.