What scores separate the upper 25 and lower 20 of the


At Smart University, all new freshmen are given an English proficiency exam during the week of registration. Scores are normally distributed with a mean of 70 and a standard deviation of 10.The university has decided to place the top 25% into honors English and the bottom 20% into remedial English. What scores separate the upper 25% and lower 20% of the students from the rest?

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