Question: The following data represent weights of cigarettes (g) from different manufacturers and their nicotine contents (mg). (a) Find the least-squares line appropriate for these data.

The following data represent weights of cigarettes (g) from different manufacturers and their nicotine contents (mg).

(a) Find the least-squares line appropriate for these data.
(b) Plot the points and graph the line. Do you think the linear regression is appropriate?
(c) Calculate the 95% confidence intervals for Î²0 and Î²1, respectively.

Weight 15.8 149 9.0 4.5 15.0 170 8.612.0 4.1 16.0 Nicotine 0.957 0.886 0.852 0.911 0.889 0.919 0.969 1.118 0.946 1.094

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