A National Manufacturer of Ball Bearings Is Experimenting with Two

question 89

Multiple Choice

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 calculated. The results are presented below: The researcher is interested in determining whether there is evidence that the two processes yield different average errors.
This example is what type of test?

• A) One sample test of means.
• B) Two sample test of means.
• C) Paired t-test.
• D) Test of proportions.

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Definitions:

Counterirritation

A method for managing pain or discomfort by intentionally inducing a second, less severe pain or irritation, to distract from the original pain.

Chronic Pain

A persistent pain that continues for weeks, months, or even years beyond the usual recovery period or occurs along with a chronic health condition.

Gate Control Theory

The proposal that pain sensations must pass through a neural “gate” in order to reach the brain and can be blocked at that gate by neurons that inhibit signals from the nociceptors.

Nocioception

The sensory nervous system's response to certain harmful or potentially harmful stimuli.