A scale which asks consumers the extent to which they agree or disagree with the statement that Levi's 501 are good looking is a semantic differential scale

If there is no specific closing date named in the escrow instructions, escrow is to close:

a. within a reasonable period of time. b. within 30 days. c. within 60 days. d. within 90 days.

Ideally, in a goal programming model, all deviations should be zero, though that is often not the case because:

a. Goal programming models often have conflicting constraints. b. Goal programming models often have a single objective function. c. Goal programming models always have a single objective function. d. All of the above