The scores on a Japanese test are normally distributed with a mean of 70 and a standard deviation of 3.2. Show your work step by step to receive full credit. The distribution table is attached to the last page. 1) (2 points) The failing grade is anything 2.5 or more standard deviations below the mean. What is the cutoff for a failing score? 2) (2 points) If 3200 students took the test, how many students failed? 3) (2 points) If 3200 students took the test and the cutoff for a “C” grade is 65, how many students got a “C”?
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