(Choose 1 answer)
(See picture)
A. 0.2025
Β. 0.3544
C. 2.2140
D. 2.0115
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 level0.05 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.
t-Test: Two-Sample Assuming Unequal Variances
Hotel 1
2.214
Hotel 2
2.0115
Variance
Observations
2.951657
20
0
Mean
3.57855
20
38
Hypothesized Mean
Difference
df
t Stat
0.354386
0.362504
P(T<=t) one-tail
t Critical one-tail
1.685953
P(T<=t) two-tail
0.725009
t Critical two-tail
2.024394
What is the standardized value of the estimate of the mean of the sampling distribution for the difference between sample means?
Q: 28
