Example on linear regression

Can be predict the number of people per one physician if we know number of people per tv set in some country?

Y= number of people/physician
X= number of people/tv set

According to data collected from 32 countries correlation coefficient is r=0.852

Now we can learnb linear regression model (by minimizing squared sum of errors):
Y=56.2*X + 1019

(Reference: The World Almanac and Book of Facts 1993 (1993), New York: Pharos Books, See also http://www.stat.yale.edu/Courses/1997-98/101/linreg.htm)