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A group of students is concerned with the amount of coffee dispensed from a certain coffee machine. They hypothesize that on average, it dispenses less

A group of students is concerned with the amount of coffee dispensed from a certain coffee machine. They hypothesize that on average, it dispenses less than 6 oz of coffee into a cup, i.e. they want to test the hypotheses H0:6 versus Ha:<6 . This is an example of

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