7
Answer (Choose 1 answer)
(See picture)
A. 0.2025
The amount of time required to reach a customer service representative has a huge impact on customer satisfaction. Below is the Excel output for significance level 0.05 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.
B. 2.2140
C. 2.0115
D. 0.3544
t-Test: Two-Sample Assuming Unequal Variances
Hotel 1
Hotel 2
Mean
2.214
2.0115
Variance
2.951657
20
0
3.57855
20
38
Observations
Hypothesized Mean
Difference
df
t Stat
0.354386
P(T<=t) one-tail
0.362504
+ Critical one-tail
1.685953
