(a) For these data, female life expectancies that are greater than the mean of the female life expectancies tend to be paired with birthrates that are (Choose one) the mean of the birthrates. (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?
(a) For these data, female life expectancies that are greater than the mean of the female life expectancies tend to be paired with birthrates that are (Choose one) the mean of the birthrates. (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?
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
(The 2nd picture contains the rest of the data as it would not fit in the first pic and it includes the question as well.)
.
Transcribed Image Text:Birthrate, x
(number of births per 1000 people)
16.7
50.0
19.5
41.7
31.9
25.4
25.0
13.1
33.3
49.9
46.0
49.5
Female life expectancy, y
(in years)
74.9
59.8
72.3
65.4
62.2
71.7
74.7
74.0
66.2
54.2
57.8
62.2
Female life expectancy
(in years)
85+
80-
75+
70+
65-
60-
55+
50.
+
10 15
X
X
20 25
X
30
X
X
35 40 45 50 55
60
Birthrate
(number of births per 1000 people)
X
Transcribed Image Text:Based on the sample data and the regression line, complete the following.
(a) For these data, female life expectancies that are greater than the mean of the female life expectancies tend to be
paired with birthrates that are (Choose one) ▼ the mean of the birthrates.
(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?
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