12. Determine the area under the standard normal curve that lies between (a) Z = - 0.25 and Z = 0.25, (b) Z= - 1.57 and Z= 0, and (c) Z= - 1.93 and Z = - 0.63 (a) The area that lies between Z = - 0.25 and Z = 0.25 is (Round to four decimal places as needed.) (b) The area that lies between Z = - 1.57 and Z = 0 is (Round to four decimal places as needed.) (c) The area that lies between Z = - 1.93 and Z= - 0.63 is (Round to four decimal places as needed.)