Solution Found!
Last cigarette Take another look at the regression
Chapter 6, Problem 47E(choose chapter or problem)
Problem 47E
Last cigarette Take another look at the regression analysis of tar and nicotine content of the cigarettes in Exercise 43.
a) Write the equation of the regression line.
b) Estimate the Nicotine content of cigarettes with 4 milligrams of Tar.
c) Interpret the meaning of the slope of the regression line in this context.
d) What does the y-intercept mean?
e) If a new brand of cigarette contains 7 milligrams of tar and a nicotine level whose residual is -0.5 mg, what is the nicotine content?
Exercise 43:
Cigarettes Is the nicotine content of a cigarette related to the “tar”? A collection of data (in milligrams) on 29 cigarettes produced the scatterplot, residuals plot, and regression analysis shown:
a) Do you think a linear model is appropriate here? Explain.
b) Explain the meaning of R2 in this context.
Questions & Answers
QUESTION:
Problem 47E
Last cigarette Take another look at the regression analysis of tar and nicotine content of the cigarettes in Exercise 43.
a) Write the equation of the regression line.
b) Estimate the Nicotine content of cigarettes with 4 milligrams of Tar.
c) Interpret the meaning of the slope of the regression line in this context.
d) What does the y-intercept mean?
e) If a new brand of cigarette contains 7 milligrams of tar and a nicotine level whose residual is -0.5 mg, what is the nicotine content?
Exercise 43:
Cigarettes Is the nicotine content of a cigarette related to the “tar”? A collection of data (in milligrams) on 29 cigarettes produced the scatterplot, residuals plot, and regression analysis shown:
a) Do you think a linear model is appropriate here? Explain.
b) Explain the meaning of R2 in this context.
ANSWER:
Step 1 of 6
The given scatter plot and linear fit for nicotine content and tar is given below:
