Compute the coefficients for a least squares regression equation and write the equation, given the following sample statistics.
a. x-bar = 50, y-bar = 100, sx = 25, sy = 75, rxy = 0.6, n = 60
b. x-bar = 60, y-bar = 210, sx = 35, sy = 65, rxy = 0.7, n = 60
c. x-bar = 20, y-bar = 100, sx = 60, sy = 78, rxy = 0.75, n = 60
d. x-bar = 10, y-bar = 50, sx = 100, sy = 75, rxy = 0.4, n = 60
e. x-bar = 90, y-bar = 200, sx = 80, sy = 70, rxy = 0.6, n = 60

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