The national average for mathematics SATs in 2014 was 538. Suppose that the distribution of scores was
Question:
The national average for mathematics SATs in 2014 was 538. Suppose that the distribution of scores was approximately bell-shaped and that the standard deviation was approximately 48. Within what boundaries would you expect 68% of the scores to fall? What percentage of scores would be above 634?
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By the Empirical Rule 68 of scores are within 1 standard deviation of the mean Thus 538 148 490 a...View the full answer
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Related Book For 
Elementary Statistics A Step By Step Approach
ISBN: 9781259755330
10th Edition
Authors: Allan G. Bluman
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