Kizspy | Question: 4
(Choose 1 answer)
(See picture)
Α. 1.6860
B. -1.6860 and 1.6860
C. 2.0244
D. -2.0244 and 2.0244
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 leve10.05 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 Hotel 2
2.214
Observations
2.951657
20
0
2.0115
3.57855
20
Mean
Variance
Hypothesized Mean
Difference
df
t Stat
38 0.354386
0.362504
P(T<=t) one-tail
t Critical one-tail
1.685953 0.725009
P(T<=t) two-tail
2.024394
t Critical two-tail
What is (are) the critical value(s) of the relevant hypothesis test if the level of significance is 0.05?
