an engineer design the valve that will regulate water pressure on an automobile engine. The engineering design a valve such that it would produce a Main pressure 6.1 pounds per square inch. It is believed that the valve performs above the specifications. The valve processor on 180 engines in the main pressure was 6.3 pounds per square inch. Assume standard deviation is known to be .9. A level of significance of .02 will be used. Determine the decision. Enter the decision rule