Which of the following scenarios most accuratley reflects the concept of scarcity?
(a) john decides not to purchase a new bike.
(b) anna decides to spend her evening babysitting rather than spending time with friends
(c) ned pays his personal income taxes before the april deadline.
(d) morgan earns an a on her economics erxam

Exercise 18-15 sheffield appliance center is an experienced home appliance dealer. sheffield appliance center also offers a number of services for the home appliances that it sells. assume that sheffield appliance center sells ovens on a standalone basis. sheffield appliance center also sells installation services and maintenance services for ovens. however, sheffield appliance center does not offer installation or maintenance services to customers who buy ovens from other vendors. pricing for ovens is as follows. oven only $790 oven with installation service 850 oven with maintenance services 970 oven with installation and maintenance services 990 in each instance in which maintenance services are provided, the maintenance service is separately priced within the arrangement at $180. additionally, the incremental amount charged by sheffield appliance center for installation approximates the amount charged by independent third parties. ovens are sold subject to a general right of return. if a customer purchases an oven with installation and/or maintenance services, in the event sheffield appliance center does not complete the service satisfactorily, the customer is only entitled to a refund of the portion of the fee that exceeds $790. assume that a customer purchases an oven with both installation and maintenance services for $990. (b) indicate the amount of revenue that should be allocated to the oven, the installation, and to the maintenance contract.

True or false: a fitted model with more predictors will necessarily have a lower training set error than a model with fewer predictors.

Marta communications, inc. has provided incomplete financial statements for the month ended march 31. the controller has asked you to calculate the missing amounts in the incomplete financial statements. use the information included in the excel simulation and the excel functions described below to complete the task