An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 270270 engines and the mean pressure was 5.65.6 pounds/square inch (psi). Assume the population standard deviation is 0.80.8. The engineer designed the valve such that it would produce a mean pressure of 5.55.5 psi. It is believed that the valve does not perform to the specifications. A level of significance of 0.020.02 will be used. Find the P-value of the test statistic. Round your answer to four decimal places. What I Know: Ho: u=5.5 Ha: u not equal to 5.5 xbar: 5.6 n: 270 pop. stand. dev: .8 alpha: 0.02 a/2: 0.01
PLEASE GO IN STEPS USING CHARTS NOT EXCEL SO THAT I CAN FOLLOW ALONG WITH YOU. I CANNOT USE EXCEL ON A TEST WITH THIS KIND OF PROBLEM
An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 270270 engines and the mean pressure was 5.65.6 pounds/square inch (psi). Assume the population standard deviation is 0.80.8. The engineer designed the valve such that it would produce a mean pressure of 5.55.5 psi. It is believed that the valve does not perform to the specifications. A level of significance of 0.020.02 will be used. Find the P-value of the test statistic. Round your answer to four decimal places.
What I Know:
Ho: u=5.5
Ha: u not equal to 5.5
xbar: 5.6
n: 270
pop. stand. dev: .8
alpha: 0.02
a/2: 0.01
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