Based on the sample data and the regression line, complete the following. (a) For these data, birthrates that are less than the mean of the birthrates tend to be paired with female life expectancies that are (Choose one) ▼ the mean of the female life expectancies. (b) According to the regression equation, for an increase of one (birth per 1000 people) in birthrate, there is a corresponding decrease of how many years in female life expectancy? 0

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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 date and the least-squares
regression line. The equation for this line is y=82.84-0.49x.
Birthrate, x
(number of births per 1000 people)
24.6
50.1
40,6
20.0
50.7
28.1
143
49.0
31.9
14.8
33.6
46.5
Send data to calculator
Send data to Excel
Female life expectancy, y
(in years)
74.3
54.4
66.2
73.6
58.9
72.7
76.1
61.5
62.4
71.4
68.0
57:5
Based on the sample data and the regression line, complete the following.
Female life expectancy
(in years)
Birthrate
(number of births per 1000 people)
Transcribed Image Text: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 date and the least-squares regression line. The equation for this line is y=82.84-0.49x. Birthrate, x (number of births per 1000 people) 24.6 50.1 40,6 20.0 50.7 28.1 143 49.0 31.9 14.8 33.6 46.5 Send data to calculator Send data to Excel Female life expectancy, y (in years) 74.3 54.4 66.2 73.6 58.9 72.7 76.1 61.5 62.4 71.4 68.0 57:5 Based on the sample data and the regression line, complete the following. Female life expectancy (in years) Birthrate (number of births per 1000 people)
Based on the sample data and the regression line, complete the following.
(a) For these data, birthrates that are less than the mean of the birthrates tend to be paired with female life expectancies
that are (Choose one) the mean of the female life expectancies.
(b) According to the regression equation, for an increase of one (birth per 1000 people) in birthrate, there is a
corresponding decrease of how many years in female life expectancy?
0
>
Transcribed Image Text:Based on the sample data and the regression line, complete the following. (a) For these data, birthrates that are less than the mean of the birthrates tend to be paired with female life expectancies that are (Choose one) the mean of the female life expectancies. (b) According to the regression equation, for an increase of one (birth per 1000 people) in birthrate, there is a corresponding decrease of how many years in female life expectancy? 0 >
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