Question

A salsa manufacturer wants to determine if the average rating of any if its four salsas is different than the others. A random sample of 80 salsa experts were chosen to sample each salsa with a score between 1 and 10. The data was recorded as: n Mild Medium Hot Vegetarian 1 17.2 8.3 6.4 3 .. .. 80 5.2 17.4 9.1 8.7 Which would be the best null hypothesis for the company to test? The favor preferences are the same for all four flavors. The observed counts are equal to the expected counts. The expected counts are all equal to 7. O Mi = 2 = 3 = 14

Answer 1

Since, we have to test for the average rating of the four types of salsa. Therefore we use here ANOVA test and according to the ANOVA test the null hypothesis for the given test is:

NULL HYPOTHESIS (H_o) : There is no significant difference between the average rating for the four salsa, that is, μ₁ = μ₂ = μ₃ = μ₄