An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 110 engines and the mean pressure was 4.6 pounds/square inch (psi). Assume the population standard deviation is 0.8. If the valve was designed to produce a mean pressure of 4.5 psi, is there sufficient evidence at the 0.02 level that the valve does not perform to the specifications? Step 1 of 6: State the null and alternative hypotheses.

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A: Method ; by using the critical value or p- value to reject the null hypothesis

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A: It is a right-tailed test.

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A: Given information:

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A: We have given that a statement related to null hypothesis in case of F test.

Q: Interpret the test hypothesis either reject or not. And, how about the significant level?

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A:

Q: State the null and alternative hypothesis for the data

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A:

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A:

Q: Please help write a research and null hypothesis for this statistical analysis.

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A: A significance hypothesis test is a very important part in statistics.

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A: Denote μ as the population mean age of bus drivers.

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A: Given: r Observed  0 18 1 22 2 17 3 18 4 or more 14