A confidence interval for a population mean has a margin of error of 4

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A confidence interval for a population mean has a margin of error of 4.

 

  1. Determine the length of the confidence interval.

 


 


 

  1. If the sample mean is 55.5, obtain the confidence interval. 
    Confidence interval: ( _______, _______). 

 


 


 

  • 10 years ago
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