Question

Thirty similar single-family household will be given the electronic device. After one year, the energy consumption of each household will be compared to the energy consumption the year before. If consumption is generally less for 30 households, the we would like to conclude that the device works as intended

A. Why would this be a bad study for determining wheather or not the electronic device helps reduce energy consumptions?

B. Describe a good designed experiment that you could use to answer the question. You will have 30 similar single-family households at your disposal. You study must take one year to complete

Answer 1

(A)

This would be a bad study for determining whether or not the electronic device helps reduce energy consumption because electronic device is not the only factor that helps to reduce energy consumption. There are other factors are: control of the equipment which consume considerable energy: Shutting down of computers when not in use, using LED bulbs instead of ordinary bulbs, turning off lights when not required, unplugging the appliances when they are not in use, using appliances with a good energy rating etc. In the given experimentation, it is not explicitly stated that the above mentioned other factors that helps to reduce energy consumption.are kept constant so that they do not affect the desired result of determining whether or not the electronic device helps reduce energy consumption

(B)

A good designed experiment that you could use to answer the question: whether or not the electronic device helps reduce energy consumption is as follows:

Thirty similar single-family household will be given the electronic device. After one year, the energy consumption of each household will be compared to the energy consumption the year before. If consumption is generally less for 30 households, the we would like to conclude that the device works as intended. The condition for the experimentation is: Throughout the period of this study, the above mentioned other factors that helps to reduce energy consumption.are kept constant so that they do not affect the desired result of determining whether or not the electronic device helps reduce energy consumption