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 5.1

5.1 pounds/square inch. It is believed that the valve performs above the specifications. The valve was tested on 180

180 engines and the mean pressure was 5.3

5.3 pounds/square inch. Assume the variance is known to be 0.81

0.81. A level of significance of 0.02

0.02 will be used. Find the value of the test statistic. Round your answer to 2 decimal places.

Enter the value of the test statistic.

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