A Researcher Claims That the Amounts of Acetaminophen in a Certain

question 48

Multiple Choice

A researcher claims that the amounts of acetaminophen in a certain brand of cold tablets have a standard deviation different from the $\sigma = 3.3$ mg claimed by the manufacturer. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.

• A) There is not sufficient evidence to support the claim that the standard deviation is equal to 3.3 mg.
• B) There is sufficient evidence to support the claim that the standard deviation is equal to 3.3 mg.
• C) There is not sufficient evidence to support the claim that the standard deviation is different from 3.3 mg.
• D) There is sufficient evidence to support the claim that the standard deviation is different from 3.3 mg.

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Definitions:

Coil Springs

Mechanical devices that can compress or extend to absorb impact or maintain force between contacting surfaces.

Hub Carriers

Component of a vehicle's suspension system that holds the wheel bearing and is mounted on the suspension.

Damper

A device used to dampen or inhibit the oscillation of mechanical energy, often seen in vehicle suspension systems.

Torsion Bar

A length of steel bar fastened to a control arm at one point and the vehicle’s frame at another. Movement of the control arm imparts twist on the torsion bar. The absorption of the twist is the spring action of the torsion bar.