Mathematics, 20.08.2020 14:01, jasminebrown72

The valve was tested on 210 engines and the mean pressure was 5.0 pounds/square inch (psi). Assume the population standard deviation is 0.9. The engineer designed the valve such that it would produce a mean pressure of 4.9 psi. It is believed that the valve does not perform to the specifications. A level of significance of 0.02 will be used. Find the value of the test statistic. Round your answer to two decimal places.

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The valve was tested on 210 engines and the mean pressure was 5.0 pounds/square inch (psi). Assume t...