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A sample of 10 high school students completed a course designed to increase SAT scores. Test scores (sum of X) = 5846 (sum of X squared) = 3428148
A) Mean and standard deviation are 584.6 and 34.28
B) What scores mark the cutoff for the most deviant 10%
C) In the past the average score was 542 can we conclude that there was a significant difference in the new test. We have to write a statistical statement and an English one.
D) If a student scored a 500 what would his percentile rank be?
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