Suppose that two shipping companies, A and B, each decide to estimate the annual percentage of shipments on which a $100 or greater claim for loss or damage was filed by sampling their records, and they report the data shown below. The owner of Company B is hoping to use these data to show that her company is superior to Company A with regard to the percentage of claims filed.Which test would be used to properly analyze the data in this experiment?
A) The test of a contingency table in a two-way contingency table.
B) The goodness-of-fitness test.
C) The z-test for the difference in two proportions.
D) The ANOVA F test for main treatment effect.

Question

Suppose that two shipping companies, A and B, each decide to estimate the annual percentage of shipments on which a $100 or greater claim for loss or damage was filed by sampling their records, and they report the data shown below.  The owner of Company B is hoping to use these data to show that her company is superior to Company A with regard to the percentage of claims filed.Which test would be used to properly analyze the data in this experiment?
A) The test of a contingency table in a two-way contingency table. 
B) The goodness-of-fitness test. 
C) The z-test for the difference in two proportions. 
D) The ANOVA F test for main treatment effect.

Quizplus · Accepted Answer

The question asks for a comparison between two percentages, which suggests a test for differences in proportions. The appropriate test in this case is the z-test for the difference in two proportions. Options A and B involve contingency tables, which are not needed here. Option D involves ANOVA, which is not appropriate for this scenario.

Suppose That Two Shipping Companies, a and B, Each Decide