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

Question 90

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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  Hotel 1  Hotel 2  Mean 2.2142.0115 Variance 2.9516573.57855 Observations 2020 Hypothesized Mean Difference 0 df 38 t Stat 0.354386 P(T<=t)  one-tail 0.362504t Critical one-tail 1.685953P(T<=t)  two-tail 0.725009t Critical two-tail 2.024394\begin{array}{l}\text { t-Test: Two-Sample Assuming Unequal Variances }\\\begin{array} { l r r } \hline & { \text { Hotel 1 } } & { \text { Hotel 2 } } \\\hline \text { Mean } & 2.214 & 2.0115 \\\text { Variance } & 2.951657 & 3.57855 \\\text { Observations } & 20 & 20 \\\text { Hypothesized Mean Difference } & 0 & \\\text { df } & 38 & \\\text { t Stat } & 0.354386 & \\\text { P(T<=t) one-tail } & 0.362504 & \\\mathrm { t } \text { Critical one-tail } & 1.685953 & \\\mathrm { P } ( \mathrm { T } < = \mathrm { t } ) \text { two-tail } & 0.725009 & \\\mathrm { t } \text { Critical two-tail } & 2.024394 & \\\hline\end{array}\end{array}
-Referring to Scenario 10-13, suppose ? = 0.05. Which of the following represents the result of the relevant hypothesis test?


A) The alternative hypothesis is rejected.
B) The null hypothesis is rejected.
C) The null hypothesis is not rejected.
D) Insufficient information exists on which to make a decision.

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