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A manufacturer of automobile transmissions uses three different processes. Management ordered a study of the production costs to see if there is a difference among
A manufacturer of automobile transmissions uses three different processes. Management ordered a study of the production costs to see if there is a difference among the three processes. A summary of the findings is shown next.
Process 1 | Process 2 | Process 3 | Total | |
Process totals ($100s) | 137 | 108 | 107 | 352 |
Sample size | 10 | 10 | 10 | 30 |
Sum of squares | 1,893 | 1,188 | 1,175 | 4,256 |
- In an ANOVA table, what are the degrees of freedom for the treatment source of variation?
- In an ANOVA table, what are the degrees of freedom for the error source of variation?
- In an ANOVA table, what are the total degrees of freedom?
- State the null hypothesis and the alternate hypothesis
- What is the critical value of F at the 5% level of significance?
- What is the computed value of F?
- What is the decision regarding the null hypothesis at the 5% significance level?
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