1.Create a 75% confidence interval for a population mean from a sample of size 54 with sample mean ¯xx¯ = 9.6. The population standard deviation is known to be σσ = 1.82. (   ,   )   [three decimal accuracy]   [three decimal accuracy]     2. Below is a 75% confidence interval for a population mean from a sample of size 58 with sample mean ¯xx¯ = 1414. ( 13.43 , 14.57 ) Determine the margin of error for this confidence interval. margin of error =     [three decimal accuracy]

MATLAB: An Introduction with Applications
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1.Create a 75% confidence interval for a population mean from a sample of size 54 with sample mean ¯xx¯ = 9.6. The population standard deviation is known to be σσ = 1.82.


(   ,   )
  [three decimal accuracy]   [three decimal accuracy]  

 

2. Below is a 75% confidence interval for a population mean from a sample of size 58 with sample mean ¯xx¯ = 1414.

( 13.43 , 14.57 )



Determine the margin of error for this confidence interval.

margin of error =  
  [three decimal accuracy]
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