main

prev        

Statement of a problem № m1066

        next    

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.




New search. (Also 1294 free access solutions)