A contractor built 30 similar homes in a suburban development.

37). A contractor built 30 similar homes in a suburban development. The homes have comparable size and amenities, but each has been sold with features that customize the appearance, landscape, and interior. The contractor expects the house to sell for about $450,000. He expects that one-third of the homes will sell either for less than $400,000 or more than $500,000. a.