In the mixing of concrete both the size of the gravel and thickness of the mortar...
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In the mixing of concrete both the size of the gravel and thickness of the mortar can possibly influence the hardness of the resulting concrete 3 levels of gravel size (factor A) and 3 levels of mortar thickness (factor B) were examined in a carefully controlled experiment. For each combination of gravel size and mortar thickness 4 batches of concrete were mixed and tested for hardness with results shown below. Size of gravel (1) Small Medium large Mortar thickness (1) Light 3 4 12 11 5 5 13 9 7 5 3 6 Medium 3 346ssa 4 6 8 11 5 5 9 4 4326 2 6 Heavy 16 14 7 10 16 7 9 19 12 4 11 5 c. Perform Duncan's multiple range test on the average of size of gravel for small, medium and large at the 5% level. In the mixing of concrete both the size of the gravel and thickness of the mortar can possibly influence the hardness of the resulting concrete 3 levels of gravel size (factor A) and 3 levels of mortar thickness (factor B) were examined in a carefully controlled experiment. For each combination of gravel size and mortar thickness 4 batches of concrete were mixed and tested for hardness with results shown below. Size of gravel (1) Small Medium large Mortar thickness (1) Light 3 4 12 11 5 5 13 9 7 5 3 6 Medium 3 346ssa 4 6 8 11 5 5 9 4 4326 2 6 Heavy 16 14 7 10 16 7 9 19 12 4 11 5 c. Perform Duncan's multiple range test on the average of size of gravel for small, medium and large at the 5% level.
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Answer rating: 100% (QA)
Since there are three levels the appropriate critical value is D227095 6085 We ... View the full answer
Related Book For
An Introduction To Statistical Methods And Data Analysis
ISBN: 9781305465527
7th Edition
Authors: R. Lyman Ott, Micheal T. Longnecker
Posted Date:
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