TABLE 10-10
The following EXCEL output contains the results of a test to determine if the proportions of satisfied guests at two restaurants are the same or different.

-Referring to Table 10-10, if you want to test the claim that "Restaurant 1 (Group 1) has a higher proportion of satisfied customers compared to Restaurant 2 (Group 2)", the p-value of the test will be
A) 0.00262
B) 0.00262/2
C) 2*(0.00262)
D) 1-(0.00262/2)

Question

TABLE 10-10
The following EXCEL output contains the results of a test to determine if the proportions of satisfied guests at two restaurants are the same or different.
 
-Referring to Table 10-10, if you want to test the claim that "Restaurant 1 (Group 1) has a higher proportion of satisfied customers compared to Restaurant 2 (Group 2)", the p-value of the test will be
A) 0.00262 
B) 0.00262/2 
C) 2*(0.00262) 
D) 1-(0.00262/2)

Quizplus · Accepted Answer

The claim is that Restaurant 1 has a higher proportion of satisfied customers, which is a one-tailed test. Therefore, the p-value should be halved from the two-tailed p-value of 0.00262.

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