Kizspy | Question: 36
(Choose 1 answer)
The amount of time required to reach a customer service representative has a huge impact on customer satisfaction. See picture for the Excel output from a study 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.
Which of the following represents the relevant hypotheses tested?
A. (i)
B. (ii)
C. (iii)
D. (iv)
t-Test: Two-Sample Assuming Unequal Variances
Hotel 1
2.214
2.951657
20
0
Mean
Variance
Observations
Hypothesized Mean
Difference
df
t Stat
P(T<=t) one-tail
t Critical one-tail
P(T<=t)t -tail
t Critical two-tail
Hotel 2
2.0115
3.57855
20
38
0.354386
0.362504
1.685953
0.725009
2.024394
(1) H_{0}:\mu_{I}-\mu_{II}\ge0 versus H_{1}:\mu_{I}-\mu_{II}<0
(ii) H_{0}:\mu_{I}-\mu_{II}\le0 versus H_{1}:\mu_{I}-\mu_{II}>0
(iii) H_{0}:\mu_{I}-\mu_{II}=0 versus H_{1}:\mu_{1}-\mu_{11}\ne0
(iv) H_{0}:\mu_{I}-\mu_{II}\ne0 versus H_{1}:\mu_{I}-\mu_{II}=0
