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4. Bell curving grades is common at some post-secondary institutions. Historically, suppose they aim for a mean of 70% and a standard deviation of 10%.

4. Bell curving grades is common at some post-secondary institutions. Historically, suppose they aim for a mean of 70% and a standard deviation of 10%. This year, the mean was only 63% and the standard deviation 7%. c. Ben took the class this year as well and is only getting a 46%. Will he be passing with the curve applied? d. What mark this year would be exactly a 50% after the curve

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