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Alex Ar [27]
3 years ago
8

An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 290 engines

and the mean pressure was 7.6 pounds/square inch (psi). Assume the population standard deviation is 1.0. If the valve was designed to produce a mean pressure of 7.7 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.

Step 2 of 6: Find the value of the test statistic. Round your answer to two decimal places.

Step 3 of 6: Specify if the test is one-tailed or two-tailed.

Step 4 of 6: Find the P-value of the test statistic. Round your answer to four decimal places.

Step 5 of 6: Identify the level of significance for the hypothesis test.

Step 6 of 6: Make the decision to reject or fail to reject the null hypothesis.

Mathematics
1 answer:
likoan [24]3 years ago
7 0

Answer:

Step-by-step explanation:

Attached is a step by step solution

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<h2>Answer:</h2>

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<h2>Step-by-step explanation:</h2>

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