SCENARIO 10-14 the Use of Preservatives by Food Processors Has Become a Become

question 132

Multiple Choice

SCENARIO 10-14
The use of preservatives by food processors has become a controversial issue.Suppose two 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 15 cuts of fresh meat are treated with preservative I and 15 are treated with preservative II,and the number of hours until spoilage begins is recorded for each of the 30 cuts of meat.The results are summarized in the table below.

-Referring to Scenario 10-14,what assumptions are necessary for testing if the population variances differ for preservatives I and II?

• A)Both sampled populations are normally distributed.
• B)Both samples are random and independent.
• C)Neither (a)nor (b)is necessary.
• D)Both (a)and (b)are necessary.

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Definitions:

Polychaete

A class of annelid worms characterized by segmented bodies and numerous bristles, commonly found in marine environments.

Coelom

A fluid-filled cavity between the gut and body wall that is lined by tissue derived from mesoderm; the main body cavity of most animals.

Radula

A toothed, chitinous ribbon in the mouth of molluscs, used for scraping or cutting food before ingestion.

Molluscan

Pertaining to mollusks, a diverse group of invertebrates which includes species like snails, clams, and octopuses, characterized by a soft body and, in many cases, a calcium carbonate shell.