Exhibit 12

question 42

Multiple Choice

Exhibit 12.5 In the following table,individuals are cross-classified by their age group and income level. Refer to Exhibit 12.5.For the chi-square test of independence,the degrees of freedom are:

• A)2
• B)4
• C)9

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Definitions:

First-Line Treatment

The initial, preferred method of treatment for a disease or condition, typically based on clinical evidence for its effectiveness.

SAD

Seasonal Affective Disorder, a type of depression that occurs at a specific time of year, usually during winter when there is less natural sunlight.

Light Therapy

A treatment method that involves exposure to bright light, often used to address seasonal affective disorder (SAD) and certain other conditions.

ECT

Electroconvulsive Therapy, a psychiatric treatment involving electric currents passed through the brain to trigger a brief seizure, aiming to treat certain mental disorders.