SOLUTION: A standardized test has a mean score of 55 with a standard deviation of 12. Using the Empirical Rule, determine the range of scores for the:
A. Middle 68% of the population
B
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A. Middle 68% of the population
B
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Question 1179851: A standardized test has a mean score of 55 with a standard deviation of 12. Using the Empirical Rule, determine the range of scores for the:
A. Middle 68% of the population
B.Middle 95% of the population
Explain and show work. Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! Middle 68% is +/- 1 sd
the values are 55+/-12, or (43, 67)
the second is the same for +/- 2 sd or 55+/- 24 or (31, 79)
