Chapter 4.3, Problem 94E

Male life expectancy. Refer to Problem $92$. Subsequent data indicated that life expectancy grew to $73.2$ years for males born during $1995\text{-}2000$ and to $74.3$ years for males born during $2000\text{-}2005$. Add the points $\left(15,73.2\right)\text{and}\left(20,74.3\right)$ to the data set in Problem $92$. Use a graphing calculator to find a quadratic regression model for all five data points. Graph the data and the model in the same viewing window.