The nonzero slope coefficient test is used for a renowned financial application referred to as the capital asset pricing model (CAPM).The model y = a + BX + E, essentially a simple linear regression model that uses a and B, In place of the usual Bo and B1, to represent the Intercept and the slope coefficients, respective Which of the following Is true about the slope coefficient a, called the stock's alpha? Measures how sensitive the stock's return is to changes In the level of the overall market The CAPM theory predicts a to be zero. Abnormal returns are positive when a > 0. Abnormal returns are negative when a < 0