SCENARIO 10-13 The amount of time required to reach a customer service representative has a huge impact on customer satisfaction.Below is the Excel output from a study to see whether there is evidence of a difference in the mean amounts of time required to reach a customer service representative between two hotels.Assume that the population variances in the amount of time for the two hotels are not equal.
-Referring to Scenario 10-13, what is(are)the critical value(s)of the relevant hypothesis test if the level of significance is 0.10?
A)1.6860
B) 1.6860
C)2.0244
D) 2.0244

Question

SCENARIO 10-13 The amount of time required to reach a customer service representative has a huge impact on customer satisfaction.Below is the Excel output from a study to see whether there is evidence of a difference in the mean amounts of time required to reach a customer service representative between two hotels.Assume that the population variances in the amount of time for the two hotels are not equal. 
-Referring to Scenario 10-13, what is(are)the critical value(s)of the relevant hypothesis test if the level of significance is 0.10?
A)1.6860 
B) 1.6860 
C)2.0244 
D) 2.0244

Quizplus · Accepted Answer

Since the population variances of the two hotels are not equal, we need to use the Welch's test. At a level of significance of 0.10 with degrees of freedom of 23.28, the critical value is 1.6860. The answer is therefore B.

SCENARIO 10-13 the Amount of Time Required to Reach a Customer