MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question
The number of adult Americans who smoke continues to drop. The table contains estimates of the percentages of adults (ages 1818 and over) who were smokers in the years between 1965 and 201715.and 201715.
???? ?Year � | ??????? ?Smokers � |
---|---|
1965 | 41.94 |
1970 | 37.4 |
1974 | 37.1 |
1978 | 34.1 |
1980 | 33.2 |
1983 | 32.1 |
1985 | 30.1 |
1987 | 28.8 |
1990 | 25.5 |
1993 | 25.0 |
1995 | 24.7 |
1997 | 24.7 |
1999 | 23.5 |
2001 | 22.8 |
2002 | 22.5 |
2004 | 20.9 |
2006 | 20.8 |
2008 | 20.6 |
2010 | 19.3 |
2012 | 18.1 |
2014 | 16.8 |
2017 | 14.0 |
According to your regression line, how much did smoking decline per year during this period, on the average? Give your answer to three decimal places.
average smoking decline:
percentage points
Expert Solution
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Step 1
Given
The data is as follows:
Year | Smokers |
1965 | 41.94 |
1970 | 37.4 |
1974 | 37.1 |
1978 | 34.1 |
1980 | 33.2 |
1983 | 32.1 |
1985 | 30.1 |
1987 | 28.8 |
1990 | 25.5 |
1993 | 25 |
1995 | 24.7 |
1997 | 24.7 |
1999 | 23.5 |
2001 | 22.8 |
2002 | 22.5 |
2004 | 20.9 |
2006 | 20.8 |
2008 | 20.6 |
2010 | 19.3 |
2012 | 18.1 |
2014 | 16.8 |
2017 | 14 |
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