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 2,10 hours (90 days). As an experiment, Holdlonger was added to the chlorine to find weather 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 the p-value.
Ho : The mean shelf life of a 5- gallon jug of chlorine is 2160
H1: The mean shelf life of a 5-gallon jug of chlorine ...
To test if the shelf life of chlorine has increased using t-test.