Random samples of four different models of cars were selected and the gas mileage of each car was measured.
The results are shown below. 
Test the claim that the four different models have the same population mean. Use a significance level of 0.05.
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The process of discussing something with someone in order to reach a mutual agreement.
Contract
A legally binding agreement between two or more parties, outlining terms and conditions of a specific arrangement or service.
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A formal group decision-making process by which individuals choose candidates to fill positions in government or other organizations through a vote.
Union Steward
An employee elected by union members to represent them in ensuring that the terms of the labor contract are enforced.
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