An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 160 engines and the mean pressure was 6.7 pounds/square Inch (psi). Assume the population standard deviation is 1.0. If the valve was designed to produce a mean pressure of 6.9 psi, is there sufficient evidence at the 0.01 level that the valve performs below 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. Answer/How to Enter) 2 Points Step 3 of 6: Specify if the test is one-tailed or two-tailed. Answer 2 Points One-Tailed Test OTwo-Tailed Test < rev hawkeslearning.com/Portal/Test/Test TakeTesta 20 988 3 $ 4 % 5 6 & 7 8 9 0 E R. Т. Y S D F G Н. J к Step 4 of 6: Find the P-value of the test statistic. Round your answer to four decimal places. Answer/How to Enter) 2 Points < Prev Step 5 of 6: Identify the level of significance for the hypothesis test. Answer/How to Enter) 2 Points < Prev Step 6 of 6: Make the decision to reject or fail to reject the null hypothesis. Answer 2 Points Reject Null Hypothesis O Fail to Reject Null Hypothesis < Prev