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To compare the life expectancies of three different brands of winter tires, fourteen tires of each brand were randomly selected and were subjected to standard wear-testing procedures. Information regarding the three brands is shown below. The life expectancy is measured in mileage (in 1000 miles) Use a= .05 Anova: Single Factor www SUMMARY Groups Count Sum Average Variance Brand A 14 504 36 38.9231 Brand B 14 609 43.5 25.8077 Brand C 14 546 39 40 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 399 199.5 5.7147 0.0067 3.2381 Within Groups 1361.5 39 34.9103 Total 1760.5 41 Use analysis of variance table to test for a significant difference among the mean mileage of the three tire brands. Formulate the hypotheses for this problem. b. Using either the p-value approach or the critical value approach, test the hypotheses. C. State your conclusion. a.

To compare the life expectancies of three different brands of winter tires, fourteen tires of each brand were randomly selected and were subjected to standard wear-testing procedures. Information regarding the three brands is shown below. The life expectancy is measured in mileage (in 1000 miles) Use a= .05 Anova: Single Factor www SUMMARY Groups Count Sum Average Variance Brand A 14 504 36 38.9231 Brand B 14 609 43.5 25.8077 Brand C 14 546 39 40 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 399 199.5 5.7147 0.0067 3.2381 Within Groups 1361.5 39 34.9103 Total 1760.5 41 Use analysis of variance table to test for a significant difference among the mean mileage of the three tire brands. Formulate the hypotheses for this problem. b. Using either the p-value approach or the critical value approach, test the hypotheses. C. State your conclusion. a.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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To compare the life expectancies of three different brands of winter tires, fourteen tires of each brand were randomly selected and were subjected to standard wear-testing procedures. Information regarding the three brands is shown below. The life expectancy is measured in mileage (in 1000 miles) Use a = .05 Anova: Single Factor www w SUMMARY Groups Count Sum Average Variance Brand A 14 504 36 38.9231 Brand B 14 609 43.5 25.8077 Brand C 14 546 39 40 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 399 199.5 5.7147 0.0067 3.2381 Within Groups 1361.5 39 34.9103 Total 1760.5 41 Use analysis of variance table to test for a significant difference among the mean mileage of the three tire brands. Formulate the hypotheses for this problem. b. Using either the p-value approach or the critical value approach, test the hypotheses. C. State your conclusion. a.
Transcribed Image Text:To compare the life expectancies of three different brands of winter tires, fourteen tires of each brand were randomly selected and were subjected to standard wear-testing procedures. Information regarding the three brands is shown below. The life expectancy is measured in mileage (in 1000 miles) Use a = .05 Anova: Single Factor www w SUMMARY Groups Count Sum Average Variance Brand A 14 504 36 38.9231 Brand B 14 609 43.5 25.8077 Brand C 14 546 39 40 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 399 199.5 5.7147 0.0067 3.2381 Within Groups 1361.5 39 34.9103 Total 1760.5 41 Use analysis of variance table to test for a significant difference among the mean mileage of the three tire brands. Formulate the hypotheses for this problem. b. Using either the p-value approach or the critical value approach, test the hypotheses. C. State your conclusion. a.
SUMMARY Groups Brand A Count Sum Average Variance 14 504 36 38.9231 Brand B 14 609 43.5 25.8077 Brand C 14 546 39 40 ANOVA Source of Variation SS df MS P-value Fcrit Between Groups 399 199.5 5.7147 0.0067 3.2381 Within Groups 1361.5 39 34.9103 Total 1760.5 41 Use analysis of variance table to test for a significant difference among the mean mileage of the three tire brands. Formulate the hypotheses for this problem. b. Using either the p-value approach or the critical value approach, test the hypotheses. State your conclusion. a. с. d. Use Fisher's LSD procedure to determine which means are different. (test all pairs) For your answer include the details of your calculations including df, critical t, the details of your LSD calculation and your conclusion.
Transcribed Image Text:SUMMARY Groups Brand A Count Sum Average Variance 14 504 36 38.9231 Brand B 14 609 43.5 25.8077 Brand C 14 546 39 40 ANOVA Source of Variation SS df MS P-value Fcrit Between Groups 399 199.5 5.7147 0.0067 3.2381 Within Groups 1361.5 39 34.9103 Total 1760.5 41 Use analysis of variance table to test for a significant difference among the mean mileage of the three tire brands. Formulate the hypotheses for this problem. b. Using either the p-value approach or the critical value approach, test the hypotheses. State your conclusion. a. с. d. Use Fisher's LSD procedure to determine which means are different. (test all pairs) For your answer include the details of your calculations including df, critical t, the details of your LSD calculation and your conclusion.
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