THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 22

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
Suppose two food preservatives are extensively tested and determined safe for use in meats.A processor wants to compare the preservatives for their effects on retarding spoilage.Suppose 16 cuts of fresh meat are treated with preservative A and another 12 cuts of meat are treated with preservative B.The number of hours until spoilage begins is recorded for each of the 28 cuts of meat.The results are summarized in the table below.

-The numerator and denominator degrees of freedom associated with the test statistic for determining if there is a difference in the population variances for preservatives A and B are,respectively:

• A)16 and 12
• B)12 and 16
• C)15 and 11
• D)11 and 15

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Definitions:

Somatosensory Cortices

Regions of the brain that process sensory information from various parts of the body, including touch, temperature, and pain.

Anterior Cingulate Cortex

A region of the brain involved in processing emotions, decision-making, empathy, and impulse control.

fMRI Imaging

Functional Magnetic Resonance Imaging, a technique that measures brain activity by detecting changes associated with blood flow.

Referred Pain

Pain perceived at a place that is different from the place of the stimulus. Visceral pain is often referred to sites on the skin.