Moving Companies Are Required by the Government to Publish a Carrier

question 62

Multiple Choice

Moving companies are required by the government to publish a Carrier Performance Report each year. One of the descriptive statistics they must include is the annual percentage of shipments on which a $50 or greater claim for loss or damage was filed. Suppose two companies, Econo-Move and On-the-Move, each decide to estimate this figure by sampling their records, and they report the data shown in the following table. The owner of On-the-Move is hoping to use these data to show that the company is superior to Econo-Move with regard to the percentage of claims filed. Which test would be used to properly analyze the data in this experiment?

• A) t test for the difference between two means
• B) F test for the difference between two variances
• C) Separate variance t test for the difference between two means
• D) Z test for the difference between two proportions

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Definitions:

Conservation

The cognitive ability to understand that quantities remain consistent even when their shape or appearance changes, typically developing in the concrete operational stage of cognitive development.

Conservation of Volume

A cognitive development concept stating that a substance's volume remains unchanged even when its appearance changes, understood by children during the concrete operational stage according to Piaget.

Transitional Stage

A developmental phase where an individual moves from one significant stage to another, often involving substantial changes in behavior or role.

Piaget's Conservation Task

Piaget's Conservation Task is a cognitive exercise used by psychologist Jean Piaget to assess a child's ability to understand that quantities remain constant despite changes in shape or arrangement.