The amount by which a product's unit selling price exceeds its total unit variable cost is the: Multiple choice question. contribution margin ratio contribution margin per unit fixed cost per unit margin of safety

Industrial engineers who specialize in ergonomics are concerned with designing workspace and devices operated by workers so as to achieve high productivity and comfort. a paper published in this research area reports on a study of preferred height for an experimental keyboard with large forearm-wrist support. a sample of 31 trained typists resulted in an average preferred height of 80.0 cm