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

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.
t-Test: Two-Sample Assuming Unequal Variances

Two-Sample Tests 10-41
-Referring to Scenario 10-13,state the null and alternative hypotheses for testing if there is evidence of a difference in the variabilities of the amount of time required to reach a customer service representative between the two hotels.

A) H : $\sigma$ ² - $\sigma$ ² $\ge$ 0 0 versus H : $\sigma$ ² - $\sigma$ ² $\lt$ 0
0 I II 1 I II
B) H : $\sigma$ ² - $\sigma$ ² $\le$ 0 versus H : $\sigma$ ² - $\sigma$ ² $\gt$ 0
0 I II 1 I II
C) H : $\sigma$ ² - $\sigma$ ² = 0 versus H : $\sigma$ ² - $\sigma$ ² $\neq$ 0
0 I II 1 I II
^d) H : $\sigma$ ² - $\sigma$ ²
= 0 versus H
: $\sigma$ ² - $\sigma$ ² = 0
0 I II