You are the marketing manager for the I Cannot Believe That This is Yogurt desse

Question

You are the marketing manager for the I Cannot Believe That This is Yogurt dessert stores. You decide to try a new dessert with hot fudge and rocky road yogurt. To get a quick idea, you ask a sample of individuals in three stores how they rate the new dessert. Ratings are on a 0 to 10 point scale. The stores are located in different parts of the country, the northeast, the southeast, and the west. The survey results are below:

                                                            New Yogurt Dessert Ratings

                                        Northeast                 Southeast              West

                                                2                                  4                         1

                                                3                                  5                         2

                                                2                                  6                         1

Are the mean ratings different across the regions? Use alpha = 0.01.

Explanation / Answer

The statistical software outout for one way ANOVA is:

Analysis of Variance results:
Data stored in separate columns.

Column statistics

ANOVA table

Since p - value is less than 0.01, reject Ho. Hence,

There is sufficient evidence to conclude that the mean ratings are different across the regions.

Column n Mean Std. Dev. Std. Error Northeast 3 2.3333333 0.57735027 0.33333333 Southeast 3 5 1 0.57735027 West 3 1.3333333 0.57735027 0.33333333

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