Astudy 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 27 44 61 22 49 64 46 3? 57 35 56 48 28 4? 63 31 42 53 17 34 48 31 43 58 20 5? 47 4? 51 44 51 54 Click here for the Excel Data File Required: a. What are the null and alternate hypotheses? PCIcthes= \"Food ' \"Toys l at all means are equal. l b. Complete the ANOVA table. Use 0.05 signicance level. (Round the SS and MS values to 1 decimal place, Fvalue, p-value, and F crit to 2 decimal places. Leave no cells blank be certain to enter "0" wherever required. Round the df values to nearest whole number.) Treatment c. What is the test statistic? (Round your answer to 4 decimal places.) 32.1548 9. Compute the 95% condence intervals that estimate the difference between each pair of means. (Negative amount should be indicated by a minus sign. Round your answers to 2 decimal places.) The interval for the difference between Clothes and Food is from (24.21) to (11.01) 28.56 to 23.56 . The interval for the difference between Clothes and Toys is from (32.61) to (19.35) 46.17 to 46.17 . The interval for the difference between Food and Toys is from (14.72) to (2.22) 54.64 to 54.64