Use a graphing calculator to do Exercise 70.
The following table shows the average remaining life expectancy (in years) for a person in the United States at selected ages.
Current Age | Birth | 20 | 40 | 60 | 80 | 90 | 100 |
Life Expectancy | 77.8 | 58.8 | 39.9 | 22.6 | 9.2 | 5.0 | 2.6 |
(a) Let birth = 0, and plot the data points.
(b) Use quartic regression to find a fourth−degree polynomial f(x) that models the data.
(c) What is the remaining life expectancy of a person of age 25? age 35? age 50?
(d) What is the life expectancy of a person who is exactly your age?
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