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A hydraulic press is operating correctly when the standard deviation of the pressure is less than 120 pounds-per-square-inch (psi) .Suppose you take a random sample of 15 measurements throughout the day of the psi and find the standard deviation to be 148.Suppose you want to test whether the press is operating correctly.
-Suppose you have the following null and alternative hypotheses: H0 : σ2 = 34.5 and H1 : σ2 > 34.5.If you take a random sample of 15 observations from a normally distributed population and find that s2 = 48.1,what is the most accurate statement that can be made about the p-value for this test?
A) 0) 01 < p-value < 0.025
B) 0) 025 < p-value < 0.05
C) p-value < 0.01
D) 0) 05 < p-value < 0.10
Correct Answer:
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