Which of the following statements is incorrect?

(a) an activity-based costing system uses more cause-and-effect relationships in tracing costs than does a traditional cost allocation system.
(b) an activity-based costing system first assigns or traces costs to the departments in which products are made.
(c) the hierarchical categories into which activities are grouped are unit-level, batch-level, product-level and facility-level activities.
(d) the total amount of unit-level costs changes in proportion to the number of units of product made.

Last week, linda's commission check was $84. if she earns a 12.5% commission on sales, what were her total sales?

Variable rate cd’s = $90 treasury bills = $150 discount loans = $20 treasury notes = $100 fixed rate cds = $160 money market deposit accts. = $140 savings deposits = $90 fed funds borrowing = $40 variable rate mortgage loans $140 demand deposits = $40 primary reserves = $50 fixed rate loans = $210 fed funds lending = $50 equity capital = $120 a. develop a balance sheet from the above data. be sure to divide your balance sheet into rate-sensitive assets and liabilities as we did in class and in the examples. b. perform a standard gap analysis and a duration analysis using the above data if you have a 1.15% decrease in interest rates and an average duration of assets of 5.4 years and an average duration of liabilities of 3.8 years. c. indicate if this bank will remain solvent after the valuation changes. if so, indicate the new level of equity capital after the valuation changes. if not, indicate the amount of the shortage in equity capital.

Russell's study compared gpa of those students who volunteered for academic study skills training and those who did not elect to take the training. he found that those who had the training also had higher gpa. with which validity threat should russell be most concerned?