In this question there are two variables . 1st is cigarette sales and 2nd is the number of high school graduates.
Let variable x denote cigarette sales and variable y denoted the number of high school graduate.
As given in the question there has been a strong positive correlation between the cigarette sales and the number of high school graduates.
If variables x and Y have strong positive correlation then the value of correlation coefficient r is greater then 0. That is r > 0.
The following graph shows strong positive correlation between the cigarette sales and the number of high school graduates.
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