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[See] A mean score on a standardized test is 50 with a standard deviation of 10. Answer the following What scores fall between -1 and +1 standard deviation?

Question: A mean score on a standardized test is 50 with a standard deviation of 10. Answer the following

  1. What scores fall between –1 and +1 standard deviation?
  2. What percent of all scores fall between –1 and +1 standard deviation?
  3. What score falls at +2 standard deviations?
  4. What percentage of scores falls between +1 and +2 standard deviations?

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