A student was interested in the question of whether more literacy among women im

Question

A student was interested in the question of whether more literacy among women improved the the life expectancy of women. (literacylife expectancy) Her overall relationship was expressed in this linear form: life expectancy(in years) 0+plliteracytE Average literacy in the sample of cities was 0.78. Average life expectancy was 69.1 years The main regression results from Excel were as follows Regression Statistics ultiple R Square djusted R Square 0.78 0.623 0.618 5.01 Standard Erro bservations NOVA 13352.56123 3352.561 133.574 812033.00162 25.0987 825385.5628 egression Residual otal Standard fficients Stat value Intercept literacyfemale T he correct estimated equation of the line is ror 1.75 13 8.4 11.6 49.8 4.6 Select one a. Life expectancy-24.6+49.8literacy b. Life expectancy-49.8+24.6"literacy+8 c. Life expectancy 49.8+24.6*literacy d. none of the above

Explanation / Answer

Correct option is (c).

Estimated regression equation:

Life expectancy = Intercept + (Slope x Literacy)

= 49.8 + 24.6 x Literacy

The estimated regression equation excludes any error term.

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