Instruction 10-9
the Use of Preservatives by Food Processors Has

question 102

Multiple Choice

Instruction 10-9
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 A and 15 are treated with preservative B, and the number of hours until spoilage begins is recorded for each of the 30 cuts of meat. The results are summarised in the table below.
$$\begin{array} { c c } \text { Preservative A } & \text { Preservative B } \\\bar { X } _ { A } = 106.4 \mathrm { hours } & \bar { X } _ { \mathbf { B } } = 56.54 \mathrm { hours } \\S _ { A } = 10.3 \mathrm { hours } & S _ { \mathrm { B } } = 13.4 \mathrm { hours }\end{array}$$
-Referring to Instruction 10-9,state the test statistic for determining if the population variances differ for preservatives A and B

• A) = -3.10
• B) = 0.8250
• C) = 0.5908
• D) = 0.7687

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Definitions:

Mental Structures

The underlying psychological frameworks that shape how individuals perceive, think, and understand the world.

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The process of growth and change in intellectual/mental abilities such as thinking, reasoning, and understanding, including the acquisition of knowledge and the ability to solve problems.

Initiative Versus Guilt

A stage in Erik Erikson's theory of psychosocial development where young children develop a sense of initiative and determination or experience guilt for failing to meet expected standards.