Banks must provide collateral to borrow in the fed funds market.

________ refers to an extraneous variable involving changes in the measuring instrument or in the observers or scores themselves

A) Instrumentation B) Statistical regression C) Selection bias D) None of the above

Each PC produced by HP involves a cost of computer chips, wires, plastic, packaging, and other inputs

Although these costs tend to be the same for each unit produced, they are called ________ costs because the total changes based on the number of units produced. A) fixed B) variable C) target D) capital E) payroll