just 21 please

remains unchanged. Note: Use your answers in (a) and (b) to answer true or false. 21. A researcher reports the following regression equation for the relationship between two variables: the predicted value of Y, given values of X. For example, suppose Y = 1.3X + 2. Find the predicted value of Y, given that X = 0, 2, 4, and 8. 22. An animal trainer tests whether the number of hours of obedience training can predict where a