An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such that it would produce a mean pressure of 6.6

6.6 pounds/square inch. It is believed that the valve performs above the specifications. The valve was tested on 120

120 engines and the mean pressure was 6.8

6.8 pounds/square inch. Assume the variance is known to be 1.00

1.00. A level of significance of 0.05

0.05 will be used. Determine the decision rule.

Enter the decision rule.