Two Major Automobile Manufacturers Have Produced Compact Cars with Engines

question 53

Multiple Choice

Two major automobile manufacturers have produced compact cars with engines of the same size. We are interested in determining whether or not there is a significant difference in the mean MPG (miles per gallon) when testing for the fuel efficiency of these two brands of automobiles. A random sample of eight cars from each manufacturer is selected, and eight drivers are selected to drive each automobile for a specified distance. The following data (in miles per gallon) show the results of the test. Assume the population of differences is normally distributed. ​ The mean of the differences is

• A) .5.
• B) 1.5.
• C) 2.0.
• D) 2.5.

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Definitions:

Oak-Yew Clade

A group within the Plantae kingdom that includes both the oak and yew families, representing an evolutionary lineage.

Anthropoids

A group of primates that includes monkeys, apes, and humans, characterized by larger brains and more complex behavior compared to other primates.

Valid Taxonomic Group

A group of organisms recognized by taxonomists to form a category in the hierarchy of biological classification.

Monkeys

Primates typically characterized by a tail, often arboreal with complex behaviors and high intelligence.