Multiple choices 15/50
(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.
Observations
Hypothesized Mean
Difference
df
t Stat
Which of the following represents the relevant hypotheses tested?
A. (ii)
B. (iv)
C. (iii)
D. (i)
t-Test: Two-Sample Assuming Unequal Variances
Hotel 1
2.214
2.951657
20
0
Mean
Variance
0.354386
0.362504
1.685953
0.725009
2.024394
Next
P(T<=t) one-tail t Critical one-tail
P(T<=t) two-tail
t Critical two-tail
Hotel 2
2.0115
3.57855
20
38
(i)Ho: μι-μ≥ 0 versus H1: μι-μι < 0
(ii) Ho: M₁-M1 = 0 versus H1: 1- > 0
(iii) Ho: M₁-1 = 0 versus H1: μιμη ≠ 0
(iv) Ho: M1-M1 ≠ 0 versus H1: M-M1 = 0
