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Penicillin Doctors studying how the human body assimilates medication inject some patients with ...

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Penicillin Doctors studying how the human body assimilates medication inject some patients with ...

Penicillin Doctors studying how the human body assimilates medication inject some patients with penicillin, and then monitor the concentration of the drug (in units/cc) in the patients' blood for seven hours. The data are shown in the scatterplot. First they tried to fit a linear model. The regression analysis and residuals plot are shown.

a. Find the correlation between time and concentration.
b. Using this model, estimate what the concentration of penicillin will be after 4 hours.
c. Is that estimate likely to be accurate, too low, or too high? Explain.

Now the researchers try a new model, using the re-expression log(Concentration). Examine the regression analysis and the residuals plot below.

d. Explain why you think this model is better than the original linear model.
e. Using this new model, estimate the concentration of penicillin after 4 hours.

Textbook

Stats: Modeling the World

Edition: 4^th

Authors: Bock, Velleman, De Veaux

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austire

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asdoooeoe Author

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Correct

sudenzia

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Smart ... Thanks!

Gorgio_De

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You make an excellent tutor!

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