Write the equation of the regression line. You can round your numbers to two decimal places. The regression equation is Life Expectancy  y = 77.82 - 0.277 Infant Mortality Rate   Based on the regression equation, if a country's infant mortality rate increased by 1 (death per 1000 births), what numerical change would you expect in that country's life expectancy?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.6: Exponential And Logarithmic Equations
Problem 7E
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  1. Write the equation of the regression line. You can round your numbers to two decimal places.

The regression equation is
Life Expectancy  y = 77.82 - 0.277 Infant Mortality Rate

 

  1. Based on the regression equation, if a country's infant mortality rate increased by 1 (death per 1000 births), what numerical change would you expect in that country's life expectancy?
Life Expectancy
80
70
50
40
0
Fitted Line Plot
Life Expectancy = 77.82 - 0.2769 Infant Mortality Rate
20
40
60
80 100
Infant Mortality Rate
120
140
160
S
R-Sq
R-Sq(adj)
7.04274
62.1%
61.5%
Transcribed Image Text:Life Expectancy 80 70 50 40 0 Fitted Line Plot Life Expectancy = 77.82 - 0.2769 Infant Mortality Rate 20 40 60 80 100 Infant Mortality Rate 120 140 160 S R-Sq R-Sq(adj) 7.04274 62.1% 61.5%
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