Life expectancy: The following table shows the average life expectancy, in years, of a child born in the given year.
a. Find the equation of the regression line, and explain the meaning of its slope.
b. Plot the data points and the regression line.
c. Explain in practical terms the meaning of the slope of the regression line.
d. Based on the trend of the regression line, what do you predict as the life expectancy of a child born in 2010?
e. Based on the trend of the regression line, what do you predict as the life expectancy of a child born in 1580? 2300?
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