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A competency test has scores with a mean of 69 and a standard deviation of 4. A histogram of the data shows that the distribution is normal. Use the Empirical Rule to find the percentage of scores between 61 and 77.

50%

95%

77%

99.7%

68%

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M91007981

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