Equation of the regression line
What is the value of y' when x = 3, if the equation of the regression line is y' = 23.1 - 3.8x ?
A. 4.73
B. 5.29
C. 34.5
D. 11.7
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A multiple regression line was calculated in which x1 was a student's grade point average and x2 was a student's age. The multiple regression line was calculated as y' = -18.7 + 46.3 x1 + 7.28 x2. If a student has a grade point average of 5.9 and
A ball is thrown straight up in the air with a velocity of 40 m/s. What is the speed of the ball right before it hits the ground? (neglecting air resistance) How long will the ball be in the air?
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