12. A researcher is evaluating customer satisfaction with the service and covera

Question

12. A researcher is evaluating customer satisfaction with the service and coverage of two phone carriers. Each individual in a sample of n = 16 uses one carrier for two weeks and then switches to the other. Each participant then rates two carriers. The following table presents the results from the repeated-measures ANOVA comparing the average ratings. Fill in the missing values in the table. (Hint: Start with the df values.) Source df MS Between treatments Within treatments_ Between subjects Error 60 Total 103

Explanation / Answer

The df for between treatment = number of treatment levels -1 = 2-1 = 1.

the df for within treatment and between subject is number of subject -1 = 16-1 = 15.

and the error df = total df - df of between treatment - df of within treatment_between subject

now total df = total observatons - 1 =(16*2)-1 = 31.(each subject gives one value for each of two carriers)

so error df = 31 - 1 - 15 = 25

so calculating the remaining fields you need the excat set of observations. However you can always treat a repeated mesure anove to be just as same a a two way anova with the subject of experiments being the second factoe other than the treatment in question.

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