from a random sample of 54 donors, it was determined their mean amount given to chairity was x=$70.5for the year. pop.standard deviation is known to be $6.50. with a confidence interval of 95% what would be the interval of the population means dollars donated ? what does e= what is the confidence interval  interpret results

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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from a random sample of 54 donors, it was determined their mean amount given to chairity was x=$70.5for the year. pop.standard deviation is known to be $6.50. with a confidence interval of 95% what would be the interval of the population means dollars donated ?

what does e=

what is the confidence interval 

interpret results 

 

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