Vickie conducts a survey of home builders to determine the average cost of building a new home. she samples 10 home builders who are building in the town in which she lives. under which conditions will her sample be a representative sample? check all that apply.

The reasons that the sample is representative:
The builders were chosen at random
The population included only builders who build in Vicki's town

Vickie wanted to determine the cost of building a house in her home, so the fact that the builders were from her town makes the sample more representative. Moreover, the random choosing of the builders helps to remove any biases that may be present.

The difference is 5,100m?