Moving Companies Are Required by the Government to Publish a Carrier

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) pooled-variance t test for the difference between two means
B) test for the difference between two variances
C) one-way ANOVA F test for differences among more than two means
D) Z test for the difference between two proportions