One of the products produced by Branco Food Company is All-Bran Cereal, which competes with three other brands of similar all-bran cereals. The company's research office wants to investigate if the percentage of people who consume all-bran cereal is the same for each of these four brands. Let us denote the four brands of cereal by and . A sample of persons who consume all-bran cereal was taken, and they were asked which brand they most often consume. Of the respondents, said they usually consume Brand , consume Brand , consume Brand , and consume Brand . Does the sample provide enough evidence to reject the null hypothesis that the percentage of people who consume all-bran cereal is the same for all four brands