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A study of the effect of television commercials on 12-year-old children measured their attention span, in...

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Statistics

A study of the effect of television commercials on 12-year-oldchildren measured their attention span, in seconds. The commercialswere for clothes, food, and toys.

ClothesFoodToys
433052
243858
424643
355449
284763
314253
173448
314358
205747
4751
4451

54

Complete the ANOVA table. Use 0.05 significance level.(Round the SS and MS values to 1 decimal place andF value to 2 decimal places.)

Find the values of mean and standard deviation. (Roundthe mean and standard deviation values to 3 decimalplaces.)

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3.8 Ratings (418 Votes)
Ans Group 1 Group 2 Group 3 Total Sum 271 536 573 1380 Count 9 12 11 32 Mean Sumn 30111 44667 52091 Sum of square xx 648889 722667 326909 Standard deviation 9006 8105    See Answer
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