The Average Life Expectancy of Tires Produced by the Whitney $\mu$

question 117

Multiple Choice

The average life expectancy of tires produced by the Whitney Tire Company has been 40,000 miles. Management believes that due to a new production process, the life expectancy of its tires has increased. In order to test the validity of this belief, the correct set of hypotheses is

• A)H₀: \(\mu\) < 40,000 H_a: \(\mu\) \(\ge\) 40,000
• B)H₀: \(\mu\) \(\le\) 40,000 H_a: \(\mu\) > 40,000
• C)H₀: \(\mu\) > 40,000 H_a: \(\mu\) \(\le\) 40,000
• D)H₀: \(\mu\) \(\ge\) 40,000 H_a: \(\mu\) < 40,000

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Definitions:

Acoelomate

An animal lacking a body cavity (coelom). Compare with coelomate and pseudocoelomate.

Statocysts

Specialized sensory organs found in some animals, such as invertebrates, that help to maintain equilibrium and orientation relative to gravity.

Mollusks

A phylum of coelomate protostome animals characterized by a soft body, visceral mass, mantle, and foot.

Terrestrial

Pertaining to the Earth or its land, as opposed to aquatic or aerial environments.