value: 0.50 points A study of the effect of television commercials on 12-year-ol

Question

value: 0.50 points 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 Toys 52 Clothes Food 43 24 42 35 28 31 17 31 20 30 38 46 54 47 43 49 63 53 48 34 43 57 47 47 51 51 54 Data place and F value to 2 decimal places. Leave no cells blank - be certain to enter "O" wherever required.) (1) Complete the ANOVA table. Use 0.05 significance level. (Round the SS and MS values to 1 decimal DF MS Factors Total

Explanation / Answer

the p-value is less than signifcance level and F-observed value is more than the F-critical value .we reject the null hypothesis and conclude that there is a difference between the three means

SUMMARY Groups Count Sum Average Variance std dev clothes 9 271 30.11111 81.11111 9.006171 food 12 536 44.66667 65.69697 8.105367 toys 11 573 52.09091 32.69091 5.717596 ANOVA Source of Variation SS df MS F P-value F crit Factor 2437.035 2 1218.518 20.80527 2.49E-06 3.327654 Error 1698.465 29 58.56775 Total 4135.5 31

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