George is looking at the colors on a paint swatch card to select the right shade of red for his wall. he is able to differentiate between the various shades of red on the card and makes a quick decision. his perception of the differences in the shades can be attributed to the of light reflecting from the shades.

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.

Ursus, inc., is considering a project that would have a five-year life and would require a $1,650,000 investment in equipment. at the end of five years, the project would terminate and the equipment would have no salvage value. the project would provide net operating income each year as follows (ignore income taxes.):

Samantha is interested in setting up her own accounting firm and wants to specialize in the area of accounting that has experienced the most significant growth in recent years. which area of accounting should she choose as her specialty? samantha should choose as her specialty.