Posts Tagged ‘ experimental design ’

Experimental Design: Problem Set

June 21, 2012
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Experimental Design: Problem Set

QUESTIONSThe tensile strength of Portland cement is being studied. Four different mixing techniques can be used economically. The following data have been collected: MixingTechniques Tensile Strength (lb/in­­2) ...

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Get at least 12 observations before making a confidence interval?

April 14, 2010
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Get at least 12 observations before making a confidence interval?

How many observations should you have before constructing a confidence interval?

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