One of Friends Is Acting a Little Strangely

question 245

Multiple Choice

One of friends is acting a little strangely. You think that she took some ecstasy. What would confirm your suspicion?

• A)An increase in the level of GABA
• B)An increase in the level of serotonin
• C)A decrease in the level of norepinephrine
• D)A decrease in the level of dopamine
• E)An increase in the level of glutamate

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Definitions:

Ordinal Data

Data that can be categorized or ranked in order but does not quantitatively measure differences between categories.

Normally Distributed Populations

Populations that follow a normal distribution, characterized by a bell-shaped curve.

Z-Test Approximation

A statistical test used to determine if there are significant differences between means with known variance and a large sample size.

Two Independent Samples

A statistical method involving the comparison of two groups of data where the samples are collected independently of one another.