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A cholesterol level test was performed on a group of 30 patients. If the known mean is 240 with a standard deviation of 12, What

A cholesterol level test was performed on a group of 30 patients. If the known mean is 240 with a standard deviation of 12,

  • What is the probability that one of them has between 240 and 264?
  • What is the probability that one of them has a level between 245 and 250?
  • What is the probability that one of them has a level greater than 240?

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