Suppose you fit the multiple regression model My = a + B1 x1 + B2 x2 to n = 28 data values and obtain the prediction equation y = 8 + 2.51 x] + 1.2 x2. The estimates of the standard deviations of the sampling A distibutions of B1 and B2 are 1.28 and 0.64, respectively. Find a 99% confidence interval for B2. Select one: O a. (-0.584, 2.984) O b. (-0.118, 2.518) O c. (-1, 2.984) O d. (-0.573, 2.973) O e. (-1.906, 6.926)