Given the least squares regression equation, = 1202 + 1,133x, when x = 3, what does equal?

Let's write that as y = 1202 + 1,133x. Substitute 3 for x in this formula:

y = 1202 + 1,133 (3) and calculate the y-value:

y = 1202 + 3399 = 4601 (answer)

When x=3, this regression equation predicts that y will be 4601.