One of the main tools used by economists to measure the actual distribution of income in an economy is:

Dr. dow jones wants to know whether a problem-based approach to teaching economics will result in higher academic performance than his traditional method. of the six sections of economics 101 at his university, dr. jones randomly assigns three sections to the traditional method and three sections to the problem-based method for unit 1 of the course. then all sections switch the instructional method for unit 2. he plans to compare the performance of the two groups of sections on their unit 1 and unit 2 exams. this study employs a design.

Sarah salesrep is brand new to her job selling "lifetime" printers that never need replacement ink cartridges. the problem is that these printers cost ten times more than a regular printer, so it is difficult to get prospective buyers to understand the cost savings of buying it. to break through the barrier and begin making sales, sarah should use a analysis that highlights her printer's lower cost.

Rosie and her brother michael decided recently to purchase an rv together. they both want to use the rv to take their families camping. the price of the rv was $10,000. since michael expects to use the rv 60% of the time and rosie 40% of the time, michael contributed $6,000 and rosie contributed $4,000. their ownership percentage equals their contribution percentage. which type of property titling should they use to reflect their ownership interest?