Question: Stephen recognizes that there are different techniques for attracting attention to advertisements, and he wants to test three of these for the sample product: all

Stephen recognizes that there are different techniques for attracting attention to advertisements, and he wants to test three of these for the sample product: all color, all black-and-white, and a combination. Here are the data on the attractiveness of each product on a scale from 1 to 10. Now he wants to know whether the three formats differ in their attractiveness.

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