Homework SourseA manufacturer of automobile transmissions uses two differen
A manufacturer of automobile transmissions uses two different processes. Management ordered a study of the production costs to see if there is a difference between the two processes. A summary of the findings is shown below.
What is the critical value of F at the 5% level of significance?
7.44
4.13
5.50
9.01
| Process 1 | Process 2 | Total | |
| Process Totals ($100\'s) | 141 | 111 | 252 |
| Sample Size | 18 | 18 | 36 |
| Sum of Squares | 1,892 | 1,198 | 3,090 |
Solution
The total sample is 10 + 10 = 20, there are 2 treatments so k=2. Therefore F(2-1,20-2)=F(1,18)=4.41.
Excel FOrmula, ROUND(FINV(0.05,1,34),4)) = 4.13
