A fatigue test was conducted on a specimen having an initial surface crack length of 14.7 mm and a value of 1.2 for Y. If values for the mean stress and stress amplitude are 65.7 MPa and 193 MPa, respectively, calculate (a) the maximum stress (in MPa) (b) the minimum stress (in MPa) (c) the stress intensity factor range K (in MPa*m^0.5) at the crack tip.