Which of the following is a method to correct for sample selection bias for the problem of incidental truncation?

According to opportunity-cost theory, the cost to an airline of letting its employees fly at no charge

A) depends upon the alternatives available to the employees. B) is greater around the Christmas holidays. C) is zero. D) will depend upon the value employees place upon travel.

A conglomerate merger takes place when

A. a firm acquires a competitor. B. similar firms agree to compete. C. a firm integrates its production backward toward its source of supply or forward in its marketing chain. D. a firm buys another firm unrelated to the original firm's business.