Given N = 17, S² = 18 $\le$ $\sigma$ ² $\le$ 363848
B)23

question 87

Multiple Choice

Given n = 17, s² = 18.56, and that the population is normally distributed, the 80% confidence interval for the population variance is ________.

• A)11.4372 \(\le\) \(\sigma\) ² \(\le\) 36.3848
• B)23.5418 \(\le\) \(\sigma\) ² \(\le\) 9.31223
• C)12.6141 \(\le\) \(\sigma\) ² \(\le\) 31.8892
• D)11.2929 \(\le\) \(\sigma\) ² \(\le\) 37.2989
• E)14.2929 \(\le\)\(\sigma\) ² \(\le\) 39.2989

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Definitions:

Waitlist Controls

In research, a group of study participants who do not receive the intervention being tested until after the active group, used to control for the effects of time and external variables.

Cognitive-Behavior Therapy

A form of psychotherapy that treats problems by modifying dysfunctional emotions, behaviors, and thoughts.

Randomized Controlled

A method of scientific experiment that uses random allocation to assign participants to either the experimental group or control group, ensuring the validity of the results.

Clinical Depression

A mental health disorder characterized by persistently depressed mood or loss of interest in activities, causing significant impairment in daily life.