What are the predictor and response variables? make a, Ask an Expert

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A doctor is doing research on the effects of medicine in a patience body. He randomly selects 10 patients that have been given a medication and records the number of days that have passed since they have taken the drug and concentration of the drug in their blood stearm. Days after given drug/concentration in blood stream: (2/0.76, 3/0.71, 5/0.67, 6/0.67, 9/0.61, 10/0.59, 12/0.54, 15/0.57, 18/0.52, 21/0.49).

A. What are the predictor and response variables?

B. Make a scatterplot of the data and find r to see if a linear pattern seems to exist. If it appears to have a linear relationship, find the regression line. Dont forget to state what r is, and interpret it )eg, indicates a strong negative linear relationship.

C. What is the coefficient of determination? Interpret the coefficient of determination.

D. Interpret the parameters E. If a person is given the drug, what is the expected concentration after 14 days? After 20 days? after 25 days?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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