Probability and Statistics for Engineering and the Sciences
9th Edition
ISBN: 9781305251809
Author: Jay L. Devore
Publisher: Cengage Learning
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Chapter 10, Problem 44SE
Four types of mortars—ordinary cement mortar (OCM). polymer impregnated mortar (PIM), resin mortar (RM), and polymer cement mortar (PCM)—were subjected to a compression test to measure strength (MPa). Three strength observations for each mortar type are given in the article “Polymer Mortar Composite Matrices for Maintenance-Free Highly Durable Ferrocement” (J. of Ferrocement, 1984: 337-345) and are reproduced here. Construct an ANOVA table. Using a .05 significance level, determine whether the data suggests that the true mean strength is not the same for all four mortar types. If you determine that the true mean strengths are not all equal, use Tukey's method to identify the significant differences.
| OCM | 32.15 | 35.53 | 34.20 |
| PIM | 126.32 | 126.80 | 134.79 |
| RM | 117.91 | 115.02 | 114.58 |
| PCM | 29.09 | 30.87 | 29.80 |
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Chapter 10 Solutions
Probability and Statistics for Engineering and the Sciences
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