Solved: Consider the regression model fit to the arsenic
Chapter 12, Problem 60E(choose chapter or problem)
Consider the regression model fit to the arsenic data in Exercise 12-16. Use arsenic in nails as the response and age, drink use, and cook use as the regressors.
(a) Calculate \(99 \%\) confidence intervals on each regression coefficient.
(b) Calculate a \(99 \%\) confidence interval on mean arsenic concentration in nails when age = 30, drink use = 4, and cook use = 4.
(c) Calculate a prediction interval on arsenic concentration in nails for the same values of the regressors used in part (b).
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99%
99%
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