Suppose an automobile manufacturer designed a radically new lightweight engine and wants to recommend the grade of gasoline that will have the best fuel economy. The four grades are regular, economy, premium, and super premium. The test car made three trial runs on the test track using each of the four grades. The miles per gallon were recorded for each grade. At the 0.05 level, what is the critical value of F used to test the hypothesis that the miles per gallon for each fuel are the same? 
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Mixing free (mainly web-based) basic services with premium or upgraded services.
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A web-based tool designed for tracking time, managing tasks, and invoicing clients, often used by freelancers and small teams.
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A strategy where a company sets the price of its products based on the prices of competitor products.
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