Suppose Kim has a camper van (a mobile home) and likes to keep it at a comfortable temperature and noticed that the energy use depended on the elevation. Kim knows that the elevation affects the outside temperature. Kim likes the camper warmer at higher elevation. Note that not all of the variables directly affect electrical usage.

(a) Show how this can be represented as a causal network, using the variables Elevation, Electrical Usage, Outside Temperature, and Thermostat Setting.

(b) Give an example where intervening has an effect different from conditioning for this network.