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Cigarettes Is the nicotine content of a cigarette related
Chapter 6, Problem 43E(choose chapter or problem)
Problem 43E
Cigarettes Is the nicotine content of a cigarette related to the “tars”? A collection of data (in milligrams) on 29 cigarettes produced the scatterplot, residuals plot, and regression analysis shown:
Dependent variable is: nicotine R squared = 92.4%
Variable Coefficient
Constant 0.154030
Tar 0.065052
a) Do you think a linear model is appropriate here? Explain.
b) Explain the meaning of R2 in this context.
Questions & Answers
QUESTION:
Problem 43E
Cigarettes Is the nicotine content of a cigarette related to the “tars”? A collection of data (in milligrams) on 29 cigarettes produced the scatterplot, residuals plot, and regression analysis shown:
Dependent variable is: nicotine R squared = 92.4%
Variable Coefficient
Constant 0.154030
Tar 0.065052
a) Do you think a linear model is appropriate here? Explain.
b) Explain the meaning of R2 in this context.
ANSWER:
Step 1 of 2
The given scatter plot and linear fit for nicotine content and tar is given below:
