Answered: Ten countries were randomly selected…

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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Question

Ten countries were randomly selected from the list of 129 countries in the
Country. The countries are compared with respect to their gross national
product per capita, an indicator of the average income level of each country.
Researchers have found that people in countries with higher income levels
tend to live longer than do people in countries with lower income levels.
In addition, birth rates tend to be higher in countries with lower incomes,
with birth rates declining as countries become better off economically.

a. Use this data to determine the Spearman rank correlation of GNP with
(i) life expectation, and (ii) the birth rate.

b. Test to determine whether the correlation of ranks is statistically
significant at the 0.05 level of significance.

Country
GNP
Life
Crude
Expectation
65
Birth Rate
Algeria
2360
34
India
340
59
31
780
Mongolia
El Salvador
62
36
940
64
36
Ecuador
1120
66
32
Malaysia
1940
74
Ireland
7750
74
18
Argentina
2520
71
21
France
16090
76
14
Sierra Leone
240
47
48
mmm3

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