Minimum-wage laws and unions are similar to each other but different from efficiency wages in that minimum-wage law and unions Select one: a. prevent firms from lowering wages in the presence of a surplus of workers. b. cause unemployment, but efficiency wages do not. c. cause wages to be above the equilibrium level. d. cause the quantity of labor supplied to exceed the quantity of labor demanded, but efficiency wages do not. Clear my choice Previous page

Suppose that a monopolistically competitive restaurant is currently serving 260 meals per day (the output where mr

At cooly cola, we are testing the appeal of our new diet one cola. in a taste test of 250 randomly chosen cola drinkers, 200 consumers preferred diet one cola to the leading brand. assuming that the sample were large enough, the large-sample 95% confidence interval for the population proportion of cola drinkers that prefer diet one cola would be:

Stock a has a beta of 1.2 and a standard deviation of 20%. stock b has a beta of 0.8 and a standard deviation of 25%. portfolio p has $200,000 consisting of $100,000 invested in stock a and $100,000 in stock b. which of the following statements is correct? (assume that the stocks are in equilibrium.) (a) stock b has a higher required rate of return than stock a. (b) portfolio p has a standard deviation of 22.5%. (c) portfolio p has a beta equal to 1.0. (d) more information is needed to determine the portfolio's beta. (e) stock a's returns are less highly correlated with the returns on most other stocks than are b's returns.