Calculate the 90% Confidence Interval for a Sample of N

question 11

Multiple Choice

Calculate the 90% confidence interval for a sample of N = 21 with a mean = 65.25 and standard error of the mean = 2.57.

• A) 90% CI = 65.25 ± 4.43
• B) 90% CI = 65.25 ± 7.31
• C) 90% CI = 65.25 ± 4.30
• D) 90% CI = 65.25 ± 5.36

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Definitions:

Negative Symptoms

Features that indicate the absence or insufficiency of normal behaviors, commonly observed in psychiatric conditions such as schizophrenia, including lack of emotion, and withdrawal.

Expressionless Face

A facial appearance in which no emotion is displayed, often intentionally or due to certain conditions affecting emotional expression.

Schizophrenia

A long-term mental disorder characterized by distorted thinking, perceptions, emotions, language, sense of self, and behavior.

Hallucinations

Hallucinations are perceptions in a conscious and awake state in the absence of external stimuli that have qualities of real perception.