giả sử lãi suất thực tằn tại hầu hết các nước ở khu vực châu Âu . Hãy giải thích sự thay đổi này sẽ tác động như thế nào đến dòng vốn (NCO) của Hoa Kỳ ?Phân tích tác động sự kiện này đến xuất khẩu ròng, lãi suất thực và tỷ giá hối đoái thực của Mỹ ra sao? bằng chính sách thương mai có giúp duy trì được cán cân thương mai như ban đầu ?

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

Paying attention to the purpose of her speech, which questions can she eliminate? a. 1 and 2 b. 3 c. 2 and 4 d. 1-4

According to management education expert ashok rao, companies can increase their profitability by through careful inventory management. a. 5% to 10% b. 10% to 25% c. 20% to 50% d. 75%