Question
In marketing children's products, it is extremely important to produce television commercials that hold the attention of the children who view them. A psychologist hired
In marketing children's products, it is extremely important to produce television commercials that hold the attention of the children who view them. A psychologist hired by a marketing research firm wants to determine whether differences in attention span exist between children watching advertisements for different types of products (new computer game, breakfast cereal, children's clothing). Twenty one children were recruited for the experiment and they were grouped according to age. Three 10-year-olds, three 9-year-olds, three 8-year-olds, three 7-year-olds, three 6-year-olds, three 5-year-olds, and three 4-year-olds were randomly assigned to watch one of the three commercials. Their attention span (in seconds) was measured and recorded. At the 5% level of significance do the results indicate that there are differences in the mean attention span between the three products? Assume Minitab gave the following partial results:
Source | DF | SS | MS | F | P |
Product | 43.52 | 0.007 | |||
Age | 195.33 | 0.000 | |||
Error | 33.81 | ||||
Total |
Product | Age | Attention |
Computer | 10-year olds | 42 |
Computer | 9-year olds | 45 |
Computer | 8-year olds | 41 |
Computer | 7-year olds | 39 |
Computer | 6-year olds | 39 |
Computer | 5-year olds | 35 |
Computer | 4-year olds | 33 |
Cereal | 10-year olds | 41 |
Cereal | 9-year olds | 40 |
Cereal | 8-year olds | 41 |
Cereal | 7-year olds | 36 |
Cereal | 6-year olds | 38 |
Cereal | 5-year olds | 37 |
Cereal | 4-year olds | 34 |
Clothes | 10-year olds | 40 |
Clothes | 9-year olds | 38 |
Clothes | 8-year olds | 36 |
Clothes | 7-year olds | 37 |
Clothes | 6-year olds | 38 |
Clothes | 5-year olds | 31 |
Clothes | 4-year olds | 30 |
What is the computed test statistic? Round your final answer to 2 decimal places.
What is the table test statistic? Provide 3 decimal places. Approximate if necessary.
What is the p-value for this test? Round to 3 decimal places.
What is the statistical conclusion?
Was this an appropriate ANOVA procedure?
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