Might we be able to predict life expectancies from birthrates?Below are bivariate data giving birthrate and life expectancy information for each of twelve countries. For each of thecountries, both x, the number of births per one thousand people in the population, and y, the female life expectancy (inyears), are given. Also shown are the scatter plot for the data and the least-squares regression line. The equation for thisline is y = 82.17 -0.47x.Birthrate, x(number of births per1000 people)14.327.451.146.824.929.918.241.649.414.133.949.3Send data to calculatorFemale life expectancy,y(in years)75.670.558.259.073.362.773.665.262.474.367.053.9Send data to ExcelFemale life expectancy(In years)Based on the sample data and the regression line, answer the following.85+80+75+70+656055+50(a) From the regression equation, what is the predicted female life expectancy (inyears) when the birthrate is 29.9 births per 1000 people? Round your answer toone or more decimal places.0XBirthrate(number of births per 1000 people)(b) What was the observed female life expectancy (in years) when the birthratewas 29.9 births per 1000 people?0XXŚ

From the given information, The regression equation is, y^=82.17-0.47x

Answered: Below are bivariate data giving…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Might we be able to predict life expectancies from birthrates? Below are bivariate data giving birthrate and life expectancy information for each of twelve countries. For each of the countries, both x, the number of births per one thousand people in the population, and y, the female life expectancy (in years), are given. Also shown are the scatter plot for the data and the least-squares regression line. The equation for this line is y=82.25 -0.48x. ^ Birthrate, x (number of births per 1000 people) 35.5 44.9 29.7 19.9 13.7 27.0 51.9 15.0 50.9 49.7 39.6 24.4 Send data to calculator Send data to Excel Female life expectancy, y (in years) 67.9 57.9 61.7 71.4 72.5 73.5 55.4 76.5 58.2 60.6 64.4 74.4 Based on the sample data and the regression line, complete the following. Female life expectancy (in years) 85 80+ 75+ 70- 65+ 60- 55+ 50 x X x ++ 10 15 20 25 (b) According to the regression equation, for an increase of one (birth per 1000 people) in birthrate, there is a corresponding decrease…

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