Question

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? choose two correct answers. the population included builders who build homes in any town. the builders were referred to vicki by the realtor who will be selling the houses. the population included builders who do not build homes in vickis town. the builders were chosen at random. the population included only builders who build in vickis town.

Explanation:

A representative sample should match the population characteristics. If the population is only builders in Vicki's town (so the sample from her town is relevant) and the builders are chosen randomly (to avoid bias), the sample is representative.

• If the population includes builders from any town, a sample from her town may not represent all.
• Builders referred by a realtor (who may have a vested interest, like higher - cost builds to sell at higher prices) can introduce bias.
• If the population includes non - local builders, a local sample won't represent them.

Answer:

• The population included only builders who build in Vicki's town.
• The builders were chosen at random.