A Study Is Conducted to Determine Whether Sunshine Affects Depression

question 97

Multiple Choice

A study is conducted to determine whether sunshine affects depression. Eight individuals are given a questionnaire measuring depression immediately following a run of 10 consecutive days when the sun shone for over 80% of the daylight hours. The same individuals have their depression measured immediately following 10 consecutive days without any sunshine. The following data are collected. The higher the score the greater the depression. Using the Wilcoxon signed ranks test to evaluate the data, the value of T obt is _________.

• A) - 3
• B) 3
• C) 33
• D) 4

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Definitions:

BMI

Body Mass Index, a measurement derived from a person's weight and height to assess body fat and overall health.

79th Percentile

A statistical measurement indicating that an individual scored better than 79% of the population sample.

Legal Requirement

A mandate imposed by law, which must be complied with by individuals, organizations, or institutions.

Special Needs

Refers to individuals, especially children, who require extra health care, education services, or specialized equipment or accommodations due to physical, mental, emotional, or learning disabilities.