A manufacturer of automobile transmissions uses three different product processes produce its product. The management ordered a study of the production costs to see if there is a difference among the three production processes. A summary of the findings is shown below.
Process 1 Process 2 Process 3 Total
Process Totals ($100's) 137 108 107 352
Sample Size 10 10 10 30
Sum of Squares 1893 1188 1175 4256
This solution discusses comparing two or more samples.