At the 025 level has holdlonger increased the shelf life

Reference no: EM13631793

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):

2,159 2,170 2,180 2,179 2,160 2,167 2,171 2,181 2,185

A. At the .025 level, has Holdlonger increased the shelf life of the chlorine? Estimate the p-value. State the null hypothesis and the alternate hypothesis.

B. State the decision rule for .025 significance level.

C. Compute the value of the test statistic.

D. Estimate the p-value.

Reference no: EM13631793

Questions Cloud

The manufacturer of the x-15 steel-belted radial truck : the manufacturer of the x-15 steel-belted radial truck tire claims that the mean mileage the tire can be driven before

The national safety council reported that 52 percent of : the national safety council reported that 52 percent of american turnpike drivers are men. a sample of 300 cars

An atom is ionized so that it has only one electron when : an atom is ionized so that it has only one electron. when the electron drops from the n 4 shell to the n 1 shell an

An axial flow compressor stage has blade rootmean and tip : an axial flow compressor stage has blade rootmean and tip velocities of 150200 and 250 ms. the stage is to be designed

At the 025 level has holdlonger increased the shelf life : the liquid chlorine added to swimming pools to combat algae has a relatively short shelf life before it loses its

A sound level meter located 892m from the explosion records : 1 a loudspeaker at a concert genertes 2.00x10-2 wm2 at a distance of 25.0m and all of its acoustic energy is radiated

Nitrogen gas enters an adiabatic nozzle with negligible : 1. air is to be compressed from 1 atm and 298 k to 8 atm at a rate of 20000 lmin. a determine if this process should be

Tennis balls to be acceptable for tournament play must : a tennis ball bouncing on a hard surface compresses and then rebounds. the details of the rebound are specified in

Iorizontal duct is uninsulated and exposed to : airflow through a long 0.2 m2 air conditioning duct maintains the outer duct surface temperature at 10 c. if the

User Account

All Pages