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. Do they?

Color Black-and-White Combination 10 4 9 8 5 8 7 4 8 8 3 9 9 3 8 9 4 7 7 5 8