In: Statistics and Probability
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 |
| 37 | 46 | 59 |
| 23 | 70 | 45 |
| 36 | 47 | 47 |
| 35 | 58 | 53 |
| 28 | 47 | 63 |
| 31 | 42 | 53 |
| 17 | 34 | 48 |
| 31 | 43 | 58 |
| 20 | 57 | 47 |
| 47 | 51 | |
| 44 | 51 | |
| 54 |
Complete the ANOVA table. Use 0.05 significance level. (Round the SS and MS values to 1 decimal place and F value to 2 decimal places.)
Solution-
ANOVA Table-
| Source of variation | sum of squares | degree of freedom | Mean S. S | F Stat |
|---|---|---|---|---|
| Treatment | 3172.8 | 2 | 1586.4 | 26.92 |
| Error | 1709.1 | 29 | 58.9 | |
| Total | 4881.9 | 31 |
Calculation-


