A study of the effect of television commercials on 12-year-old children measured

Question

A study of the effect of television commercials on 12-year-old children measured their attention span, in seconds. The commercials were for clothes, food, and toys. Clothes Food Toys 46 70 47 58 47 42 34 43 57 47 59 45 47 53 63 53 48 58 47 51 51 37 23 35 28 31 17 31 20 54 Bolick here for the Excel Data File 1. Complete the ANOVA table. Use .05 significance level. (Round the SS and MS values to 1 decimal place and F value to 2 decimal places. Leave no cells blank -be certain to enter "O" wherever required.) df MS Source Factors Total 2. Find the values of mean and standard deviation. (Round the mean and standard deviation values to 3 decimal places.) Mean StDev Level Clothes Food Toys

Explanation / Answer

1.

Using technology, like Excel's One-Way ANOVA under Data Analysis, we get:

2.

Using technology, the we get the means and standard deviations:

Source of Variation SS df MS F P-value Factors 3172.777 2 1586.388 26.91785 2.46E-07 Error 1709.098 29 58.93443 Total 4881.875 31

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