The Use of Preservatives by Food Processors Has Become a Controversial

question 22

Multiple Choice

The use of preservatives by food processors has become a controversial issue. Suppose 2 preservatives are extensively tested and determined safe for use in meats. A processor wants to compare the preservatives for their effects on retarding spoilage. They will choose to use the preservative that can keep the meat fresh for the longest amount of time. 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. Suppose the variability of the number of hours until spoilage is the same for meat treated by both preservatives but the normal probability plots reveal that the number of hours until spoilage is right-skewed for the 15 cuts treated by preservative I and left-skewed for the 15 cuts treated with preservative II. Which of the following tests will be the most appropriate?

• A) pooled-variance t test
• B) paired t test
• C) Wilcoxon rank sum test
• D) Levene's test

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Definitions:

Team Development

Team development refers to the process of improving collective performance by enhancing individual competencies, fostering unity, and resolving conflicts within a group.

Performing

The stage of group development where the team effectively works together to achieve its goals with optimized processes.

Norming

Norming is a stage in team development where members resolve differences, appreciate colleagues’ strengths, and develop a unified commitment towards the team’s goals.

Forming

The initial stage in group development, where team members first come together and start to understand their tasks and group structure.