In a market research study, members of a consumer test panel are asked to rate the visual appeal (on a 1 to 10 scale) of the texture of dashboard plastic trim in a mockup of a new fuel cell car. The manufacturer is testing four finish textures. Panelists are assigned randomly to evaluate each texture. The test results are shown below. Each cell shows the average rating by panelists who evaluated each texture. Research question: Is mean rating affected by age group and/or by surface typ
In a market research study, members of a consumer test panel are asked to rate the visual appeal (on a 1 to 10 scale) of the texture of dashboard plastic trim in a mockup of a new fuel cell car. The manufacturer is testing four finish textures. Panelists are assigned randomly to evaluate each texture. The test results are shown below. Each cell shows the average rating by panelists who evaluated each texture. Research question: Is
| Mean Ratings of Dashboard Surface Texture | ||||
| Age Group | Shiny | Satin | Pebbled | Pattern |
| Youth (under 21) | 6.4 | 6.5 | 5.0 | 4.7 |
| Adult (21 to 39) | 5.8 | 5.6 | 6.5 | 5.4 |
| Middle-Age (40 to 61) | 4.8 | 5.5 | 6.2 | 5.5 |
| Senior (62 and over) | 3.2 | 4.0 | 6.6 | 4.2 |
The ANOVA model is Two factor without replication
Row effect hypotheses- H0: A1 = A2 = A3 = 0
H1: Not all the Aj are equal to zero
Column-effect hypotheses- H0: B1 = B2 = B3 = 0
H1: Not all the Bk are equal to zero
Fill in the missing data. in the table of Means (Round your SS values to 3 decimal places, F values to 2 decimal places, and other answers to 4 decimal places.)
Given information:
Given that the market research study members of a consumer test panel are asked to rate the visual appeal of the texture of dashboard plastic trim in a mock-up of new fuel cell car.
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