The Marketing Manager for an Automobile Manufacturer Is Interested in Determining

question 128

Multiple Choice

The marketing manager for an automobile manufacturer is interested in determining the proportion of new compact-car owners who would have purchased a knee airbag if it had been available for an additional cost of $300. The manager believes from previous information that the proportion is 0.30. Suppose that a survey of 200 new compact-car owners is selected and 79 indicate that they would have purchased the knee airbag. If you were to conduct a test to determine whether there is evidence that the proportion is different from 0.30 and decided not to reject the null hypothesis, what conclusion could you reach?

• A) There is sufficient evidence that the proportion is 0.31.
• B) There is not sufficient evidence that the proportion is 0.31.
• C) There is sufficient evidence that the proportion is 0.30.
• D) There is not sufficient evidence that the proportion is not 0.30.

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Definitions:

Cough

A common reflex action aimed at clearing the throat or respiratory passages of irritants, mucus, or foreign particles.

Sentence

A set of words that is complete in itself, typically containing a subject and predicate, conveying a statement, question, exclamation, or command.

Interpret

To explain the meaning of information, words, or actions, often involving a subjective understanding.

Ambiguity

The quality of being open to more than one interpretation; the lack of definitiveness or clarity in meaning or intention.