If and

question 46

Multiple Choice

If and
Are nonzero vectors for which ∙ = 0, it must follow that

• A) × = 0.
• B) is parallel to .
• C) | × | = AB.
• D) | × | = 1.

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Definitions:

Alternative Hypothesis

The hypothesis that is tested against the null hypothesis, usually representing the notion of a difference or effect.

Type I Error

Erroneously dismissing a true null hypothesis, often called a "false positive."

Sample Mean

The average obtained from a sample, calculated by summing all sample data points and dividing by the number of points.

Null Hypothesis

A statement or assumption that there is no effect or no difference, and is the hypothesis that researchers aim to test against.