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A study was carried out to compare mean customer satisfaction scores at service center city A, in city B, and in city C. The sample means on a scale of 0 to 10 were 8.4 in city A, city B, and 7.9 in city C. Each sample size = 100, MS error = 0.41, and the F test statistic has P-value <0.001. Complete parts a through d. interpret the confidence intervals. A. Since 0 falls in at least one of the intervals, we cannot infer that all three pairs of population means are different. OB. Since 0 does not fall in any of these intervals, we can infer that all three pairs of

A study was carried out to compare mean customer satisfaction scores at service center city A, in city B, and in city C. The sample means on a scale of 0 to 10 were 8.4 in city A, city B, and 7.9 in city C. Each sample size = 100, MS error = 0.41, and the F test statistic has P-value <0.001. Complete parts a through d. interpret the confidence intervals. A. Since 0 falls in at least one of the intervals, we cannot infer that all three pairs of population means are different. OB. Since 0 does not fall in any of these intervals, we can infer that all three pairs of

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 11PPS
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is A study was carried out to compare mean customer satisfaction scores at service centers in city A, in city B, and in city C. The sample means on a scale of 0 to 10 were 8.4 in city A, 8. city B, and 7.9 in city C. Each sample size = 100, MS error = 0.41, and the F test statistic=27 has P-value <0.001. Complete parts a through d. interpret the confidence intervals. OA. Since 0 falls in at least one of the intervals, we cannot infer that all three pairs of population means are different. B. Since 0 does not fall in any of these intervals, we can infer that all three pairs of population means are different. City A is higher than cities B and C. City C is higher than city B. C. Since 0 does not fall in any of these intervals, we can infer that all three pairs of population means are different. City C is higher than cities A and B. City B is higher than city A. D. Since 0 does not fall in any of these intervals, we can infer that all three pairs of population means are different. City B is higher than cities A and C. City A is higher than city C. c. The margin of error for Tukey 95% multiple comparison confidence intervals for comparing the service centers is 0.22. Construct the intervals. Interpret. DOD 000 F4 Construct the Tukey 95% multiple comparison confidence interval for the difference in population means between city A and city B. View an example The Tukey interval for HA-HB is . (Round to two decimal places as needed. Use ascending order.) NOV 11 ... % Get more help. F5 útv MacBook Air S F6 & F7 Clear all * DII F8 Check answer A F9 A
Transcribed Image Text:is A study was carried out to compare mean customer satisfaction scores at service centers in city A, in city B, and in city C. The sample means on a scale of 0 to 10 were 8.4 in city A, 8. city B, and 7.9 in city C. Each sample size = 100, MS error = 0.41, and the F test statistic=27 has P-value <0.001. Complete parts a through d. interpret the confidence intervals. OA. Since 0 falls in at least one of the intervals, we cannot infer that all three pairs of population means are different. B. Since 0 does not fall in any of these intervals, we can infer that all three pairs of population means are different. City A is higher than cities B and C. City C is higher than city B. C. Since 0 does not fall in any of these intervals, we can infer that all three pairs of population means are different. City C is higher than cities A and B. City B is higher than city A. D. Since 0 does not fall in any of these intervals, we can infer that all three pairs of population means are different. City B is higher than cities A and C. City A is higher than city C. c. The margin of error for Tukey 95% multiple comparison confidence intervals for comparing the service centers is 0.22. Construct the intervals. Interpret. DOD 000 F4 Construct the Tukey 95% multiple comparison confidence interval for the difference in population means between city A and city B. View an example The Tukey interval for HA-HB is . (Round to two decimal places as needed. Use ascending order.) NOV 11 ... % Get more help. F5 útv MacBook Air S F6 & F7 Clear all * DII F8 Check answer A F9 A
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