Question

Male Life Expectancy At 65 Refer to Exercise 57 . The projections of male life expectancy at age 65 in the United States are summarized in the following table $(x=0$ corresponds to 2000 ). $$ \begin{array}{|l|cccccc|} \hline \text { Year, } \boldsymbol{x} & 0 & 10 & 20 & 30 & 40 & 50 \\ \hline \text { Years beyond } \mathbf{6 5}, \boldsymbol{y} & 15.9 & 16.8 & 17.6 & 18.5 & 19.3 & 20.3 \\ \hline \end{array} $$ a. Find an equation of the least-squares line for these data. b. Use the result of (a) to estimate the life expectancy at 65 of a male in $2040 .$ How does this result compare with the given data for that year? c. Use the result of (a) to estimate the life expectancy at 65 of a male in 2030 .

          Male Life Expectancy At 65 Refer to Exercise 57 . The projections of male life expectancy at age 65 in the United States are summarized in the following table $(x=0$ corresponds to 2000 ).
$$
\begin{array}{|l|cccccc|}
\hline \text { Year, } \boldsymbol{x} & 0 & 10 & 20 & 30 & 40 & 50 \\
\hline \text { Years beyond } \mathbf{6 5}, \boldsymbol{y} & 15.9 & 16.8 & 17.6 & 18.5 & 19.3 & 20.3 \\
\hline
\end{array}
$$
a. Find an equation of the least-squares line for these data.
b. Use the result of (a) to estimate the life expectancy at 65 of a male in $2040 .$ How does this result compare with the given data for that year?
c. Use the result of (a) to estimate the life expectancy at 65 of a male in 2030 .

Added by Leon Z.

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