An engineer designed a valve that will regulate waterpressure on an automobile engine. The engineer designed the valvesuch that it would produce a mean pressure of 4.2 pounds/squareinch. It is believed that the valve performs above thespecifications. The valve was tested on 170 engines and the meanpressure was 4.4 pounds/square inch. Assume the standard deviationis known to be 1.0. A level of significance of 0.02 will be used.Determine the decision rule.
Enter the decision rule