Suppose the gold spot price is $300/oz., the 1-year forward price is $310.686, and the continuously compounded risk-free rate is 5%. in class, we neglect the convenience yield for gold. in reality gold can may be lent and borrowed. some entities operating in the wholesale gold market do lend gold and earn interest on such transactions. to sum up, there is a convenience yield for gold and it takes the name of "lease rate". (a) what is the lease rate? (b) what is the return on a cash-and-carry if you cannot loan out the gold (i. e. you do not have access to the wholesale gold market)? (c) what is the return on a cash-and-carry if you do loan out the gold, earning the lease rate?

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The hawthorne works was a large western electric factory with 45,000 employees. during the 1920s and 1930s, hawthorne works was the site of some well-known industrial studies. in one of the studies, researchers investigated the impact of different working conditions on worker productivity. prior to the start of the study, researchers secretly measured workers' productivity for several weeks. then researchers chose two workers, who then chose their own teams. the teams were separated from the general workforce and completed their work in different experiment rooms where the researchers could observe them more easily. over a 5-year period researchers manipulated the structure of the workday for each team (number and duration of breaks and number of hours per shift). for each of these changes in working conditions, the researchers measured the effect on productivity. for some conditions, such as frequent short breaks, workers rebelled by intentionally decreasing productivity. why did the researchers secretly measure the workers' productivity before creating the two treatment groups? a, to create similar treatment groups so that a cause-and-effect relationship could be establishedb, to draw conclusions about the productivity of all workers in the plant based on the test groupsc, to directly control for confounding variablesd, to provide a baseline for measuring worker productivity

Fortress international, a large conglomerate, procures a few component parts from external suppliers and also manufactures some of the key raw materials in its own subsidiaries. aside from this, the company does not solely depend on outside distributors to reach its customers. in fact, it has its own retail stores to distribute its products. in this scenario, which of the following alternatives to vertical integration is fortress international applying? a. concentric integration b. taper integration c. horizontal integration d. conglomerate integration