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A Valve Is at Less Than 18" of Mercury When

question 25

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A valve is at less than 18" of mercury when tested in a vacuum tester. Tech A states that all valves below this value need to replaced. Tech B states that this value may vary based on each shop warranty policy. Who is correct?


Definitions:

α

Denotes the level of significance in hypothesis testing, representing the probability of rejecting the null hypothesis when it is actually true.

Z Statistic

A type of standard score that indicates the number of standard deviations a datum is from the mean of a distribution, used in significance testing.

One-tailed Test

A statistical hypothesis test in which the region of rejection is on only one side of the sampling distribution.

α

Symbol often used to represent the level of significance in hypothesis testing, typically denoting the probability of making a Type I error.

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