Question: [EX03-095] Twenty-four countries were randomly selected from The World Factbooks 2004 list of world countries. The life expectancies for males and females were recorded for

[EX03-095] Twenty-four countries were randomly selected from The World Factbook’s 2004 list of world countries. The life expectancies for males and females were recorded for those countries.

Country Male Life Expectancy Female Life Expectancy Albania 74.37 80.02 American Samoa 72.05 79.41

••• Remainder of data on Student’s Suite CD-ROM Source: The World Factbook, 2004, http://www.cia.gov/cia/publications/

factbook/geos/ve.html

a. Construct a scatter diagram of life expectancy for males, x, and life expectancy for females, y.

b. Does it appear that these two variables are correlated?

c. Find the equation of the line of best fit.

d. What does the numerical value of the slope represent?

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