Scenario 12-6
According to an article in Marketing News, fewer checks are being written at the grocery store
checkout than in the past.To determine whether there is a difference in the proportion of shoppers
who pay by check among three consecutive years at a 0.05 level of significance, the results of a
survey of 500 shoppers in three consecutive years are obtained and presented below.
-True or False: Referring to Scenario 12-6, the assumptions needed to perform the test are
satisfied.

Question

Scenario 12-6
According to an article in Marketing News, fewer checks are being written at the grocery store
checkout than in the past.To determine whether there is a difference in the proportion of shoppers
who pay by check among three consecutive years at a 0.05 level of significance, the results of a
survey of 500 shoppers in three consecutive years are obtained and presented below. 
-True or False: Referring to Scenario 12-6, the assumptions needed to perform the test are
satisfied.

Quizplus · Accepted Answer

The assumptions needed to perform the test are satisfied because the sample is random, the population is normally distributed, and the variances of the two populations are equal.

Scenario 12-6 According to an Article in Marketing News, Fewer Checks Are