SCENARIO 10-9
The following EXCEL output contains the results of a test to determine whether the proportions of satisfied customers at two resorts are the same or different.

Two-Sample Tests 10-31
-Referring to Scenario 10-9, if you want to test the claim that "Resort 1 (Group 1) has a lower proportion of satisfied customers compared to Resort 2 (Group 2)", you will use
A)a t-test for the difference between two proportions.
B)a Z-test for the difference between two proportions.
C)an F test for the difference between two proportions.
D)an F test for the ratio of two variances.

Question

SCENARIO 10-9
The following EXCEL output contains the results of a test to determine whether the proportions of satisfied customers at two resorts are the same or different.
  
Two-Sample Tests 10-31
-Referring to Scenario 10-9, if you want to test the claim that "Resort 1 (Group 1) has a lower proportion of satisfied customers compared to Resort 2 (Group 2)", you will use
A)a t-test for the difference between two proportions. 
B)a Z-test for the difference between two proportions. 
C)an F test for the difference between two proportions. 
D)an F test for the ratio of two variances.

Quizplus · Accepted Answer

A Z-test for the difference between two proportions is appropriate when testing the claim that one proportion is lower than the other. A t-test for the difference between two proportions assumes that the sample sizes are large enough and the proportions are not too close to 0 or 1. An F-test for the difference between two proportions is not applicable. An F-test for the ratio of two variances is not relevant to this scenario.

SCENARIO 10-9 The Following EXCEL Output Contains the Results of a Test