Gadgets on standby eat power
2. If household electrical power costs us $ ____ per watt (see local power bill), then what is our average annual power bill?
3. Is 64 homes a big enough sample size of the total number
of homes to be representative of an average Australian home? Why
or why not? How and where should they be chosen?
(Written by Lisa Colombo, BTeach student, University of Tasmania,
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