Which of the Following Would Be an Appropriate Null Hypothesis

question 68

Multiple Choice

Which of the following would be an appropriate null hypothesis?

• A)The mean of a population is equal to 55.
• B)The mean of a sample is equal to 55.
• C)The mean of a population is greater than 55.
• D)Only (a)and (c)are appropriate.

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Definitions:

Factorial Research Design

An experimental design technique that involves studying the effects of two or more factors by changing them simultaneously to observe their interactions on dependent variables.

Independent Variables

Factors that are manipulated or varied in an experiment to observe their effect on dependent variables.

Combinations

A selection of items from a larger set where the order of selection does not matter.

Interaction Effect

An effect in statistical analysis indicating that the influence of one variable on the dependent variable differs across levels of another variable, demonstrating that the effect is not simply additive.