The Next Questions Are Based on the Following Information

question 93

Multiple Choice

The Next Questions Are Based On The Following Information:
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.
-Assume the following null and alternative hypotheses: H₀ : μ = μ₀ and H₁ : μ > μ₀.In addition,you know σ.Take a random sample of n observations and choose some value α.What is the decision rule for this test?

• A)Reject H₀ if ( - μ₀)/ (σ / )> z_α
• B)Reject H₀ if ( - μ₀)/ < -z_α
• C)Reject H₀ if ( - μ₀)/ < z_α
• D)Reject H₀ if ( - μ₀)/ (σ / )> z_α/2

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Definitions:

Gilded Age

A term that describes the late 19th century era in the United States characterized by rapid economic growth, technological innovation, and ostentatious displays of wealth, along with significant social and economic inequality.

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The structured set of practices, beliefs, and institutions that define the operation of the United States government and its interactions with the populace.

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Organizations that seek to achieve political power by electing their members to public office, thereby influencing public policy and government decisions.

Subtreasury Plan

A proposal in the late 19th century aiming to revolutionize credit and storage for agricultural products to benefit farmers.