The tensile strength of Portland cement is being studied. Four different mixing techniques can be used economically. A completely randomized experiment was conducted and the following data were collected:: Mixing Technique 1 2 3 4 Tensile Strength (lb/in²) 3129 3000 2865 3200 3300 2975 2900 2985 2700 2600 2800 2600 2890 3150 3050 2765 Test the hypothesis that mixing techniques affect the strength of the cement. Use α = 0.05. In case of significant difference on the means, use the Tukey's HSD method with α = 0.05 to make comparisons between pairs of means. The Portland cement is hydrophilic cement; as a result, the powder-to-liquid ratio affects the properties of the final mix. In addition, the mixing technique affects hydration.
The tensile strength of Portland cement is being studied. Four different mixing techniques can be used economically. A completely randomized experiment was conducted and the following data were collected:: Mixing Technique 1 2 3 4 Tensile Strength (lb/in²) 3129 3000 2865 3200 3300 2975 2900 2985 2700 2600 2800 2600 2890 3150 3050 2765 Test the hypothesis that mixing techniques affect the strength of the cement. Use α = 0.05. In case of significant difference on the means, use the Tukey's HSD method with α = 0.05 to make comparisons between pairs of means. The Portland cement is hydrophilic cement; as a result, the powder-to-liquid ratio affects the properties of the final mix. In addition, the mixing technique affects hydration.
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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Determine the ;
*Hypothesis
*Calculation
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Transcribed Image Text:2. The tensile strength of Portland cement is being studied.
Four different mixing techniques can be used economically.
A completely randomized experiment was conducted and
the following data were collected::
Mixing
Technique
1
2
3
4
Tensile Strength (lb/in²)
3129 3000 2865
3200
3300
2975
2800
2900
2600
2700
2985
2600
2890
3150
3050
2765
Test the hypothesis that mixing techniques affect the
strength of the cement. Use a = 0.05. In case of significant
difference on the means, use the Tukey's HSD method with
a = 0.05 to make comparisons between pairs of means.
The Portland cement is hydrophilic cement; as a result,
the powder-to-liquid ratio affects the properties of the
final mix. In addition, the mixing technique affects
hydration.
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