To find the value of y when x is 3, we need to substitute 3 into the regression equation.
The equation is:
y = 1202 + 1133x
Now, replace x with 3:
y = 1202 + 1133(3)
This simplifies to:
y = 1202 + 3399
Now, add those two numbers together:
y = 4601
So, when x is 3, the value of y equals 4601.