An F-Test for Equality of Variances Gives a P-Value of .003

question 47

Multiple Choice

An F-test for equality of variances gives a p-value of .003. At α = .05, what conclusion can be made about the preferred test to compare the means for the same sample?

• A)We would prefer a pooled variance t-test for equality of means.
• B)We would not wish to pool the variances in a t-test for equality of means.
• C)We would prefer a paired t-test for equality of means.
• D)The variances have nothing to do with the t-test for equality of means.

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Definitions:

Actual Information

Factual data or evidence that is true and accurate, without alteration or distortion.

Raw Materials Quantity Variance

The difference between the actual quantity of raw materials used in production and the estimated quantity expected to be used, measured in terms of cost.

Direct Materials Purchases Variance

This measures the difference between the actual cost of direct materials purchased and the expected (or standard) cost of those materials.

Actual Results

The real outcomes or data achieved, as opposed to forecasts or projections.