A Particular Additive Is Claimed to Increase the Fuel Efficiency

question 20

Multiple Choice

A particular additive is claimed to increase the fuel efficiency of hybrid vehicles. Eight hybrid cars are used to determine if there is a difference in fuel efficiency (l/100km) with and without the additive. The appropriate nonparametric method to use for these data is the

• A) Kruskal-Wallis test.
• B) Kendall's tau test.
• C) Wilcoxon signed-rank test.
• D) Wilcoxon rank-sum test.
• E) Spearman's rho test.

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Definitions:

Hippocampus

A critical brain structure located in the temporal lobe, involved in memory formation and spatial navigation.

Motor Cortex

An area of the cerebral cortex involved in planning, controlling, and executing voluntary movements.

Phantom Limb Pain

Pain or discomfort felt in an area that has been amputated, where the brain continues to receive messages from nerves originally serving the missing limb.

Amputation

The surgical removal of a limb or extremity of the body, often performed to remove diseased tissue or relieve pain.