SOLUTION
The probability that the person favors raising the drinking age is given as:
"Pr\\left(Favors\\:raising\\:the\\:drinking\\:age\/\\:Male\\:\\right)=\\frac{Total\\:number\\:of\\:males\\:who\\:favors\\:drinking\\:age}{Total\\:Number\\:of\\:Males}"
"Pr\\left(Favors\\:raising\\:the\\:drinking\\:age\/\\:Male\\:\\right)=\\frac{\\left(560-390\\right)}{\\left(560-390\\right)+\\left(440-160\\right)}"
"Pr\\left(Favors\\:raising\\:the\\:drinking\\:age\/\\:Male\\:\\right)=\\frac{170}{170+280}=\\frac{170}{450}=\\frac{17}{45}"
Hence, the probability that the person favors raising the drinking age is "=\\frac{17}{45}"
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