An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve to produce a mean pressure of 5.5 pounds/square inch. It is believed that the valve performs above the specifications. The valve was tested on 190 engines, and the mean pressure was 5.6 pounds/square inch. Assume the standard deviation is known to be 0.7. A level of significance of 0.02 will be used. Determine the decision rule.
