Question: Consider the oxygen plant data in Problem 2.7 and assume that purity and hydrocarbon percentage are jointly normally distributed random variables. a. What is the

Consider the oxygen plant data in Problem 2.7 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 ρ = 0.

c. Construct a 95% CI for ρ .

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