If it is known that the chloride levels in healthy


A random sample of 100 healthy residents has a mean chloride level of 102 mEq/L. If it is known that the chloride levels in healthy individuals have a standard deviation of 40 mEq/L, find a 95% confidence interval for the true mean chloride level of all healthy residents. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. 

  • What is the lower limit of the 95% confidence interval?
  • What is the upper limit of the 95% confidence interval?

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Basic Statistics: If it is known that the chloride levels in healthy
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