20 a What is an appropriate null hypothesis for the test for
20
a. What is an appropriate null hypothesis for the test for no differences in the population means (ANOVA)?
b. What is an appropriate alternate hypothesis?
c. What is the Q statistic?
d. What is the value of the test statistic (F)?
e. What is the critical value?
f. What is the p value?
g. At a 95% confidence level, what is your conclusion concerning the null hypothesis? Reject / Not Reject?
h. Using the Critical Value Test (test statistic vs. critical value), explain your conclusion concerning the null hypothesis?
i. Using the p value test (p value vs. value), explain your conclusion concerning the null hypothesis?
j. Would a Tukey-Kramer test for multiple comparisons be appropriate based on your ANOVA conclusion? Yes / No?
| Kroger | Glad | Hefty | TuffStuff |
| 34 | 32 | 33 | 26 |
| 30 | 42 | 34 | 18 |
| 40 | 34 | 32 | 20 |
| 38 | 36 | 40 | 15 |
| 36 | 32 | 40 | 20 |
| 30 | 40 | 34 | 20 |
| 30 | 36 | 36 | 17 |
| 42 | 43 | 34 | 18 |
| 36 | 30 | 32 | 19 |
| 38 | 38 | 34 | 20 |
Solution
