Suppose that X is the time (in minutes) required to complete one of two tasks in an assembly process, and Y is the time (in minutes) required to complete the second of two tasks in the assembly process. X and Y are independent. Further, suppose X~N(10, 4) and Y~N(15, 3). Let T = X + Y. What is the probability that it will take more than one-half hour to fully assemble one item?