The marginal productivity theory states that if a firm operates in a perfectly competitive factor market, it pays each factor of production its marginal revenue product. However, this theory may fail to hold if factor markets are not competitive.
One circumstance under which factor markets may fail to be competitive is if there is imperfect information.
Which of the following are ways in which firms seek to overcome information problems? Select all that apply.

a) Only hiring workers who have earned good grades in college.
b) Always hiring from the outside to avoid being accused of discrimination.
c) Promoting workers from within the company who have shown themselves to be productive, rather than hiring from outside.

Analyzing and computing accrued warranty liability and expense waymire company sells a motor that carries a 60-day unconditional warranty against product failure. from prior years' experience, waymire estimates that 2% of units sold each period will require repair at an average cost of $100 per unit. during the current period, waymire sold 69,000 units and repaired 1,000 units. (a) how much warranty expense must waymire report in its current period income statement? (b) what warranty liability related to current period sales will waymire report on its current period-end balance sheet? (hint: remember that some units were repaired in the current period.) (c) what analysis issues must we consider with respect to reported warranty liabilities?