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Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least āc.ā using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least ācā?
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The function f(x)= -(x+5)(x+1) is down. what is the range of the function?
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What is the value of the 2 in 5,678.321...
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