Chapter 1.3, Problem 12E

Cigarette smoking. The data in Table 7 shows that the percentage of male cigarette smokers in the United States declined from $27.6\%$ in 1997 to $16.7\%$ in 2015.

Applying linear regression to the data for males in Table 7 produces the model

$m=-0.56t+27.82$

where $m$ is percentage of male smokers and $t$ is time in years since 1997. Draw a scatter plot of the male smoker data and a graph of the regression model.

(B) Estimate the first year in which the percentage of male smokers is less than $10\%.$