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Old 08-04-2007   #1
Neil
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Default statistic help??

highlighterville takes big pride in it's power conservation approach. the city wants to know how much power it has saved. a sample of 50 homes reveals an avg of 46.8 kilowatt hr/wk, with std deviation of 53.put 90% AND 98 %confidence limit around avg saving, could this sample have been drawn from popul with a mean of 35?thanks to everyone in adavance for trying...
 
 

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