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?

\begin{array} { l c c } \hline & \text { E cono- Move } & \text { On-the- Move } \\\hline \text { Total shipments sampled } & 900 & 750 \\\text { Number of shipments with a claim c } \$ 50 & 162 & 60 \\\hline\end{array}

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

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