Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line.​ (The pair of variables have a significant​ correlation.) Then use the regression equation to predict the value of y for each of the given​ x-values, if meaningful. The number of hours 6 students spent for a test and their scores on that test are shown below. Hours spent studying, x 0 2 3 3 5 5   ​(a) x=4 hours ​(b) x=3.5 hours Test​ score, y 38 44 52 47 63 67   ​(c) x=15 hours ​(d) x=2.5 hours. Find the regression equation

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