Consider the oxygen plant data in Problem and assume that purity and hydrocarbon percentage are jointly normally

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Consider the oxygen plant data in Problem and assume that purity and hydrocarbon percentage are jointly normally distributed random variables.

a. What is the correlation between oxygen purity and hydrocarbon percentage?

b. Test the hypothesis that $ho=0$.

c. Construct a $95 %$ CI for $ho$.

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Introduction To Linear Regression Analysis

ISBN: 9781119578727

6th Edition

Authors: Douglas C. Montgomery, Elizabeth A. Peck, G. Geoffrey Vining

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