Pt 5

7. A two-factor analysis of variance is (two way ANOVA with replication) conducted to test the effect that price and advertising have on sales of a particular brand of bottled water. Each week a combination of particular levels of price and advertising are used and the sales amount is recorded. The computer results are shown below. ANOVA Source of Variation SS MS F P-value F crit Sample (advertising) 99.73324 99.73324 5.251652 0.034201 4.413873 Columns (price) 1 150.432 575.2161 30.28914 1.74E-06 3.554557 Interaction 1577.526 2 788.7629 41.53387 1.8E-07 3.554557 Within 341.835 18 18.99083 Total 3169.526 23 Based on the results above and a 0.05 level of significance, is there interaction present? Remember to show all parts of the hypothesis test you use and use the computer output given ( null and alternative, p-value, decision, interpretation)