In Order to Compare the Life Expectancies of Three Different

question 43

Essay

In order to compare the life expectancies of three different brands of tires, ten tires of each brand were randomly selected and were subjected to standard wear testing procedures. Information regarding the three brands is shown below.
$\begin{array}{ccc}&\text { Brand A }&\text { Brand B }&\text { Brand C }\\\text { Average mileage in } 1000 \text { miles) }&37 & 38 & 33 \\\text { Sample variance }&3 & 4 & 2\end{array}$ Use the above data and test to see if the mean mileage for all three brands of tires is the same. Let α = 0.05. Use both the critical value and p-value approaches.

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Definitions:

Corporation

A business organization that is owned by one person or group of people, in which the owner has limited liability in the business, and therefore, is not personally liable.

Closing

A meeting attended by a buyer, seller, attorneys, and a representative of a lending institution for the official sale of a property.

Semimonthly

Refers to something happening twice a month or every half month, typically resulting in 24 occurrences in a year.

Paychecks

Regular payments made by employers to employees for the work they have performed, often on a weekly or bi-weekly basis.