The Only Time a Difference Between Two Sample Means May

question 28

Multiple Choice

The only time a difference between two sample means may be called "significant" is when

• A) they are at least 10 points apart
• B) they differ by at least .05 points
• C) the first mean is larger than the second mean
• D) the null hypothesis has been rejected

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Definitions:

Greek Letter

Symbols used in various fields such as mathematics, science, and engineering to denote constants, variables, and parameters.

Critical Value

A threshold in statistical testing that defines the boundary for rejecting the null hypothesis.

Obtained Value

The actual value measured or calculated in an experiment, often compared against a critical value to determine statistical significance.

Confidence Interval

A range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter.