One of the Major U

question 91

Multiple Choice

One of the major U.S. tire makers wishes to review its warranty for their rainmaker tire. The warranty is for 40,000 miles. The tire company believes that the tire actually lasts more than 40,000 miles with a standard deviation of 15,000 miles. A sample 49 tires revealed that the mean number of miles is 45,000 miles. Test the hypothesis with a 0.05 significance level.

• A) The decision rule is to reject if Z > 1.645. The calculated value of z is +2.33.
• B) The decision rule is to reject if Z < 1.645. The calculated value of z is -2.33.
• C) The decision rule is to reject if Z > 1.96. The calculated value of z is +2.33.
• D) The decision rule is to reject if Z < 1.96. The calculated value of z is +2.33.

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Definitions:

Inequality

The unequal distribution of resources, opportunities, and rights among individuals and groups in a society.

Cultural Appropriation

The adoption or use of elements of one culture by members of another culture, often without permission and/or understanding, which can lead to controversy and debate over issues of respect, identity, and intellectual property.

Indigenous Cultures

The customs, social practices, and ways of life of native groups who have historically inhabited regions, often with distinct languages, traditions, and connections to the land.

Financial Interests

Investments or stakes in financial assets or ventures that carry potential for financial gain or loss.