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Answer: A.The value is a parameter because the class of 28 students is a population.Step-by-step explanation:We know that aparameteris a measure calculated from the whole population where as astatisticsis a measure calculated from a sample taken from population.Given :The average score for a class of 28 students taking a calculus midterm exam was Modifying 72 % with underline .Since 72% is the proportion of entire population, thus this value is a parameter....