Given the Following Data, Collected from an Independent Groups Design

question 28

Multiple Choice

Given the following data, collected from an independent groups design. When analyzing the data, assume that a = 0.05. The conclusion regarding the main effect of variable A is _________.

• A) Retain H₀ . We cannot conclude variable A has main effect.
• B) Accept H₀ . We cannot conclude variable A has main effect.
• C) Reject H₀ . Variable A has a significant main effect.
• D) Reject H₀ . Variable A has no effect.

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Definitions:

µ = 145

A statement indicating that the mean (average) of a particular set of data or population is equal to 145.

Standard Error

The standard deviation of the sampling distribution of a statistic, typically the mean, reflecting the variation of the sampling statistic over different samples.

Mean

The arithmetic average of a set of numbers, obtained by dividing the sum of these numbers by their quantity.

Z-statistic

A statistic used to determine the difference between an observed statistic and its hypothesized population parameter, measured in units of the standard deviation.