A Sample of N = 25 Scores Has M =

question 50

Multiple Choice

A sample of n = 25 scores has M = 20 and s² = 9.What is the sample standard deviation?

• A)3
• B)4.5
• C)9
• D)81

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Definitions:

Symptom

A physical or mental feature that indicates a condition or disease.

Stimulant Drug

A type of drug that increases activity in the body or brain, leading to increased alertness, attention, and physical energy.

Cocaine

Cocaine is a powerful stimulant drug derived from the leaves of the coca plant, which is illegal in many countries and can lead to severe addiction and health problems.

Neural Activity

The electrical and chemical processes that occur within neurons, contributing to brain functions such as thought and action.