In test subjects, the main statistics of the two groups students by random students from Group 1 come. Amounting to 13 found that the average 65 score standard deviation 20 points and random student group at 2 amounting to 16 found that average 70 points in 22 standard deviation score find the range of 95% of the auditor determined the ratio of variance of the test scores of students, both groups.
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