Before finalizing the final design of a keyboard, an electronics company deicded
ID: 3043098 • Letter: B
Question
Before finalizing the final design of a keyboard, an electronics company deicded to conduct an experiment to see the effect of two design choices (backlight: red vs. blue; product weight: heavy vs. light) on customers' attitude towards the product (measured on a scale of 1 to 7). Run the appropriate statistical test and at .05 level identify whether these design choices have an effect on consumers' attitude towards the product. Identify if there is a significant interaction effect (at .05 level).
blue red heavy 1 7 7 7 5 6 5 7 5 7 1 7 3 7 7 6 3 7 7 6 2 7 3 4 1 6 7 6 7 7 4 7 5 5 5 6 4 5 5 6 light 7 6 7 7 5 4 7 6 5 7 5 6 5 3 4 4 6 3 7 4 5 6 6 3 6 7 5 7 6 4 5 6 5 7 7 5 5 7 4 4Explanation / Answer
Two-way ANOVA: Attitude versus Backlight, Weight
Source DF SS MS F P
Backlight 1 13.613 13.6125 6.48 0.013
Weight 1 0.313 0.3125 0.15 0.701
Interaction 1 25.313 25.3125 12.04 0.001
Error 76 159.750 2.1020
Total 79 198.988
S = 1.450 R-Sq = 19.72% R-Sq(adj) = 16.55%
From the above analysis, we can conclude that choice of backlight colors has the significant effect on consumers' attitude towards the product at 0.05 level of significance. Whereas the weight does not have any significant effect. But their interaction has the significant effect on consumers' attitude towards the product at 0.05 level of significance.
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