A national manufacturer of ball bearings is experimenting with two different processes for producing precision ball bearings. It is important that the diameters be as close as possible to an industry standard. The output from each process is sampled, and the average error from the industry standard is measured in millimeters. The results are presented here. Process A Process B Sample mean 16.00 17.00 Standard deviation 1.00 0.5 Sample size 26 28 The researcher is interested in determining whether there is evidence that the two processes yield different average errors. Assume that Process A is the first population. The population standard deviations are unknown but are assumed equal. What are the degrees of freedom?

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A national manufacturer of ball bearings is experimenting with two different processes for producing precision ball bearings. It is
important that the diameters be as close as possible to an industry standard. The output from each process is sampled, and the
average error from the industry standard is measured in millimeters. The results are presented here.
Process A
Process B
Sample mean
16.00
17.00
Standard deviation
1.00
0.5
Sample size
26
28
The researcher is interested in determining whether there is evidence that the two processes yield different average errors.
Assume that Process A is the first population. The population standard deviations are unknown but are assumed equal. What are
the degrees of freedom?
Transcribed Image Text:A national manufacturer of ball bearings is experimenting with two different processes for producing precision ball bearings. It is important that the diameters be as close as possible to an industry standard. The output from each process is sampled, and the average error from the industry standard is measured in millimeters. The results are presented here. Process A Process B Sample mean 16.00 17.00 Standard deviation 1.00 0.5 Sample size 26 28 The researcher is interested in determining whether there is evidence that the two processes yield different average errors. Assume that Process A is the first population. The population standard deviations are unknown but are assumed equal. What are the degrees of freedom?
Multiple Choice
54
52
27
24
Transcribed Image Text:Multiple Choice 54 52 27 24
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