A Researcher for Major League Baseball Is Interested in Visual

question 51

Multiple Choice

A researcher for Major League Baseball is interested in visual accuracy of the players.The indicators of visual accuracy are batting average (high vs.low) and a computer "flicker" program that indicates changes in either the central or the noncentral region of a scene.The dependent variable is the time it takes to notice a change during flickers.When the researcher looks at a table of means, the data show that central flicker and high batting average = 40; noncentral flicker and high batting average = 20; central flicker and low batting average = 20; and noncentral flicker and low batting average = 40.Assuming a very powerful statistical test, the researcher should find:

• A) a main effect for "flicker" type.
• B) a main effect for batting average.
• C) no main effects and no interaction.
• D) no main effects but a significant interaction.

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