What Is True of Caffeine

question 12

Multiple Choice

What is true of caffeine?

• A)It is a stimulant proven to cause modest improvements in athletic performance.
• B)It is a sedative that generally has no adverse health effects.
• C)The International Olympic Committee does not classify caffeine as a prohibited substance.
• D)Dehydration is a likely side effect of consuming caffeine in relatively small doses.

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Definitions:

Wilcoxon Test Statistic

A non-parametric test statistic used to compare two paired groups, assessing whether their population mean ranks differ.

Two-Tail

Refers to a type of hypothesis test that considers both directions of difference or effect, looking for deviations in two opposite directions.

Level Of Significance

The probability threshold below which a result is considered statistically significant.

Nonparametric Tests

Statistical tests that do not assume a specific distribution for the data, often used when parametric test assumptions cannot be satisfied.