Question: 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

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 5.2 pounds/square inch. It is believed that the valve performs above the specifications. The valve was tested on 200 engines and the mean pressure was 5.4 pounds/square inch. Assume the standard deviation is known to be 1.0. A level of significance of 0.1 will be used. Find the value of the test statistic. Round your answer to 2 decimal places.

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