Technological disruptions cause leading firms to fall by the wayside

The product's purchase cost plus the discounted cost of maintenance and repair less the discounted salvage value gives the ________

A) service warranty cost B) out-of-pocket cost C) life-cycle cost D) facilitating services cost E) value-augmentation cost

A(n) ________ is commonly used for the purpose of providing inferences for making statements about the means of parent populations

A) F-test B) p-test C) t-test D) z-test E) chi-square test