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A researcher designs an experiment by manipulating room temperature (cold, warm, or hot); noise level (quiet or loud); and room color (pink, blue, or black). identify the possible number of main effects.

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The possible number of main effect is THREE.
Main effects refers to the major conditions that are specify in the experiment; these are: room temperature, noise level and room colour. These three factors are manipulated in the designed experiment.
User Seba Cherian
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