Medicine A treats Symptom Y. 900 subjects with Symptom Y volunteered to take Medicine A and 140 were treated effectively. In order to estimate with 95% confidence the medicine's efficacy, we should use: ZInterval or 1-PropZInt or 2-SampZInt or TInterval or 2-SampTInt or 2-PropZInt

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Medicine A treats Symptom Y. 900 subjects with Symptom Y volunteered to take Medicine A and 140 were treated effectively. In order to estimate with 95% confidence the medicine's efficacy, we should use:

  • ZInterval
  • or
  • 1-PropZInt
  • or
  • 2-SampZInt
  • or
  • TInterval
  • or
  • 2-SampTInt
  • or
  • 2-PropZInt
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