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An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer...

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 4.54.5 pounds/square inch. It is believed that the valve performs above the specifications. The valve was tested on 200200 engines and the mean pressure was 4.64.6 pounds/square inch. Assume the standard deviation is known to be 0.60.6. A level of significance of 0.020.02 will be used. Make a decision to reject or fail to reject the null hypothesis.

Make a decision.

Math   Statistics-And-Probability   
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