The desired percentage of SiO2 in a certain type of aluminous cement is 5.5. To test whether
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The desired percentage of SiO2 in a certain type of aluminous cement is 5.5. To test whether the true average percentage is 5.5 for a particular production facility, 16 independently obtained samples are analyzed. Suppose that the percentage of SiO2 in a sample is normally distributed with and that .
a. Does this indicate conclusively that the true average percentage differs from 5.5? Carry out the analysis using the sequence of steps suggested in the text.
b. If the true average percentage is and a level test based on is used, what is the probability of detecting this departure from H0?
c. What value of n is required to satisfy and b(5.6) 5 .01?
a 5 .01
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Related Book For
Probability And Statistics For Engineering And The Sciences
ISBN: 9781133169345
8th Edition
Authors: Jay L Devore, Roger Ellsbury
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