A student was performed on a type of bearing to nd the relationship of amount of wear y to x1 = oil viscosity and x2 = load. The accompanying data were obtained. Complete parts (a) and (b) below. Click here to view the bearing data. Click here to view page 1 of the table of critical values of the t-distribution. Click here to view p_age 2 of the table of critical values of the t-distribution. (a) Estimate oz using multiple regression of y on x.l and x2. s2 = 695.5 (Round to one decimal place as needed.) (b) Compute predicted values, a 95% condence interval for mean wear, and a 95% prediction interval for observed wear if x1 =15 and x2 = 1100. y = (Round to three decimal places as needed.) o Bearing Data