An eccentric professor believes that a child with iq 100 should have a reading test score of 50, and that reading score should increase by 1 point for every additional point of iq. what is the equation of the professor’s regression line for predicting reading score from iq?

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)