Question

A random sample of nonindustrialized countries was selected, and the life expectancy in years is listed for both men and women.

Men | 45.2 | 54.3 | 62.8 | 53.2 | 68.4 | 64.7 |

Women | 44.4 | 62.3 | 61.4 | 55.2 | 65.1 | 59.5 |

The correlation coefficient for the data is =r0.844 and =α0.05. Should regression analysis be done?

Find the equation of the regression line. Round the coefficients to at least three decimal places.

y'= a+bx

a=

b=

Find women's life expectancy in a country where men's life expectancy = 59 years. Round your answer to at least three decimal places.

Answer #1

The statistical software output for this problem is :

= 16.047 + 0.722 x

a = 16.047

b = 0.722

women's life expectancy = 58.633

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