(3) (3 pts) A hotel numbers its fare classes from higher to lower as 1, 2, 3 and 4. The room prices for these classes are pi=$300, p2=$250, p3=$200, P4=$150. The demands for these fare classes are denoted by D1, D2, D3 and D4. These demands turn out to have normal distributions with the following means and variances: D, EN(5,2), D2 E N(5,2), D3 N(5,2), D4 N(5,2). a) Use EMSR-a heuristic to find the protection level y3 for classes {1, 2, 3}? b) Use EMSR-a heuristic to find the protection level y2 for classes {1, 2}? c) Use EMSR-a heuristic to find the protection level y for class {1}