A group of students performed an experiment by testing batteries to see how long they would hold their
charge under different conditions. One group of batteries were all Energizer batteries and the other
group consisted of several brands of similarly priced batteries.
The Energizer batteries maintained their charge for approximately a 3% longer period of time than the
other batteries in a low power drain device. For a medium drain device, the Energizers maintained their
charge for approximately 10% longer than the other batteries. For a high drain device, the Energizers
maintained their charge for approximately 29% longer than the other batteries.
What might the hypothesis of the study be?
Select one:
O a.
Energizer batteries perform better than similarly-priced batteries under varying loads.
O b. Other batteries perform better than Energizer batteries under varying loads.
O c. All batteries perform about the same under varying loads.