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Mathematics, 23.04.2020 00:06 tbair5417
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 whetehr it would increase the shelf life. A sample of nine jugs of chlorine had hese shelf lives (in hours):
2159, 2170, 2180, 2179, 2160, 2167, 2171, 2181, 2185
At the .025 level, has Holdlonger increased the shelf life of the chlorine? (estimate the p-value). Show your detailed work.
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