ANOVA and Regression

In a study to examine the customer satisfaction of four major car brands (GM, Ford, Toyota and Hyundai), a survey of25 consumers who recently purchased vehicles from each brand was conducted. The survey respondents were asked to rate their satisfaction on a 5-point Likert scale, with 1 being the highly unsatisfied and 5 being the extremely satisfied. The results of this survey are given below.

Use Excel to test whether there is evidence to conclude that there is a difference in the overall satisfaction of the four car brands and interpret the results (in the spaces indicated below).

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