The figure below shows the life expectancy for persons living in the U.S.A. Average Life Expectancy 80 75 Year R²: Life Expectancy, US 70 65 60 1920 1940 1960 1980 2000 2020 The regression analysis of the data yields the following values: Year Variable Coefficient Constant -353.87 0.2157 = 0.9539 Use the regression model to predict the life expectancy in 2015.

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