The following materials standards have been established for a particular product:Standard quantity per unit of output 4.6gramsStandard price$15.05per gram The following data pertain to operations concerning the product for the last month: Actual materials purchased 3,100gramsActual cost of materials purchased$44,020 Actual materials used in production 1,400gramsActual output 200units What is the materials quantity variance for the month

With signals from no-claim bonuses and deductibles, a. the marginal cost curve for careful drivers lies to the left of the marginal cost curve for aggressive drivers b. auto insurance companies insure more aggressive drivers than careful drivers because aggressive drivers have a greater need for the insurance c. the market for car insurance has a separating equilibrium, and the market is efficient d. most drivers pay higher premiums than if the market had no signals