9.43 Performance of a bus depot. Refer to the International and Technology (February 2011) study of public bus depot performance, Exercise 9.25 (p. 520). Recall that 150 customers provided overall performance ratings at each of three different bus depots (Depot 1, Depot 2, and Depot 3). The average per- formance scores were determined to be significantly differ- ent at a = .05 using an ANOVA F-test. The sample mean 67.17, x2 = 58.95 = 44.49. The researchers employed the Bonferroni method to rank the three performance means using an exper- imentwise error rate of .05. Adjusted 95% confidence inter- vals for the differences between each pair of treatment means are shown in the table. Use this information to rank the mean Journal of Engineering Science performance scores were reported as x1 and x3 performance scores at the three bus depots. Comparison Adjusted 95% CI (1 - u2) M3) (H2 - H3) (1.50, 14.94) (15.96, 29.40) (7.74, 21.18)

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9.43 Performance of a bus depot. Refer to the International
Technology
(February 2011) study of public bus depot performance,
Exercise 9.25 (p. 520). Recall that 150 customers provided
overall performance ratings at each of three different bus
depots (Depot 1, Depot 2, and Depot 3). The average per-
formance scores were determined to be significantly differ-
ent at a = .05 using an ANOVA F-test. The sample mean
67.17, x2 = 58.95
= 44.49. The researchers employed the Bonferroni
method to rank the three performance means using an exper-
imentwise error rate of .05. Adjusted 95% confidence inter-
vals for the differences between each pair of treatment means
are shown in the table. Use this information to rank the mean
Journal
of Engineering
Science
and
performance scores were reported as x1
and x3
performance scores at the three bus depots.
Comparison
Adjusted 95% CI
(1 - u2)
(u1 - u3)
(H2 - H3)
(1.50, 14.94)
(15.96, 29.40)
(7.74, 21.18)
Transcribed Image Text:9.43 Performance of a bus depot. Refer to the International Technology (February 2011) study of public bus depot performance, Exercise 9.25 (p. 520). Recall that 150 customers provided overall performance ratings at each of three different bus depots (Depot 1, Depot 2, and Depot 3). The average per- formance scores were determined to be significantly differ- ent at a = .05 using an ANOVA F-test. The sample mean 67.17, x2 = 58.95 = 44.49. The researchers employed the Bonferroni method to rank the three performance means using an exper- imentwise error rate of .05. Adjusted 95% confidence inter- vals for the differences between each pair of treatment means are shown in the table. Use this information to rank the mean Journal of Engineering Science and performance scores were reported as x1 and x3 performance scores at the three bus depots. Comparison Adjusted 95% CI (1 - u2) (u1 - u3) (H2 - H3) (1.50, 14.94) (15.96, 29.40) (7.74, 21.18)
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