45. Life expectancy 2010 Data for 26 Western Hemisphere countries can be used to examine the association between life expectancy and the birth rate (number of births per 1000 population).

a) Create a scatterplot relating these two variables and describe the association.

b) Find the equation of the regression line.

c) Interpret the value of R2.

d) Make a plot of the residuals. Are any countries unusual?

e) Is the line an appropriate model?

f) If you conclude that there is an outlier, set it aside and recompute the regression.
g) If government leaders want to increase life expectancy, should they encourage women to have fewer children?
Explain.

Country 1000 population) Birth Rate (births/ Life Expectancy Argentina 18 77 Bahamas, The 16 70 Barbados 13 74 Belize 27 68 Bolivia 26 67 Canada 10 81 Chile 15 77 Colombia 18 74 Costa Rica 17 78 Dominican Republic 22 74 Ecuador 21 75 El Salvador 25 72 Guatemala 28 70 Honduras 26 70 Jamaica 20 74 Mexico 20 76 Nicaragua 23 Panama Paraguay 28 222 72 20 77 76 Puerto Rico 12 79 United States 14 78 Uruguay 14 76 Venezuela Virgin Islands 22 21 74 12 79