A Company Claims That You Can Expect Your Car to Get

question 84

Essay

A company claims that you can expect your car to get one mpg better gas mileage while using their gasoline additive. A magazine did a study to find out how much a car's gas mileage improved while using the gasoline additive. The study used 36 cars and recorded the average mpg with and without the additive for each car in the study. The cars with the additive averaged 1.20 mpg better than without and had a variance of 0.36 (mpg)².
A) Specify the competing hypotheses to determine if the gasoline additive improved gas mileage by at least one mpg. Use the matched-pairs sampling.
B) Calculate the value of the test statistic and the critical value.
C) Make a conclusion at the 5% significance level.

• A) Specify the competing hypotheses to determine if the gasoline additive improved gas mileage by at least one mpg. Use the matched-pairs sampling.
• B) Calculate the value of the test statistic and the critical value.
• C) Make a conclusion at the 5% significance level.

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Definitions:

Current Asset

An asset expected to be converted into cash, sold, or consumed within one year or the normal operating cycle of the business, whichever is longer.

Non-current Asset

Long-term investments or properties that a company holds and are not expected to be converted into cash within a year.

Current Liability

A financial obligation that is due to be settled within one year or within the normal operating cycle, whichever is longer.

Bank Indebtedness

A financial term referring to the amount of debt a company has borrowed from banking institutions.