Question: The liquid chlorine added to swimming pools to combat algae

The liquid chlorine added to swimming pools to combat algae has a relatively short shelf life before it loses its effectiveness. Records indicate that the mean shelf life of a 5-gallon jug of chlorine is 2,160 hours (90 days). As an experiment, Holdlonger was added to the chlorine to find whether it would increase the shelf life. A sample of nine jugs of chlorine had these shelf lives (in hours):


At the .025 level, has Holdlonger increased the shelf life of the chlorine? Estimate thepvalue.


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  • CreatedDecember 10, 2014
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