Reference no: EM132195758
In a? study, a random sample of 20 adults rated the effectiveness of advertisements. Each adult rated an advertisement that lasted 30 or 60 seconds. The block design in the accompanying table shows these ratings? (on a scale of 1 to? 5, with 5 being extremely? effective). Use (alpha) α = 0.10 and a technology tool and the given block design to perform a? two-way ANOVA test.
Length Advertising medium
Radio, TV
30 sec 1, 1.
3, 2.
2, 4.
1 5.
4, 4.
60 sec 3, 3.
1, 5.
5, 1.
1, 5.
3, 5.
a. Determine the null and alternative hypotheses for the main effects?.
b. Determine the test statistics for the main effects. rounding to two decimal places?.
Determine the test statistic for the interaction? effect, rounding to two decimal places?.
c. Determine the? p-value for the effect of the advertising medium on the? rating, rounding to three decimal places?
Determine the? p-value for the effect of the length of the ad on the? rating, rounding to three decimal places?
d. Determine the? p-value for the interaction effect between advertising medium and length of the ad on the?rating, rounding to three decimal places?