老师您好, 下图是题目信息. 问题1: 有个选项的解释说: F-statistic in Exhibit 2 confirms this lack of explanatory power. 我想请问下这个怎么看? 我不是太明白这个 问题2: Significance of F 是指什么? 谢谢!

55-34请讲解

55-42这道题根据排除法得到了正确答案C，但是根据已知条件结合课后答案，没看出来这个指标具体的代入数字是怎么得来的，请解答

老师，在运用Par=Vfixed时，不用管0时刻吗？可是只有0时刻，Vfloating=V fixed吧…

Hello, instructor. I do not understand the meaning of the sentence that "coefficient of determination measures the fraction of the total variation in the dependent variable that is explained by the independent variable". could you please explain again? Thanks.

12. Trumpit Resorts Company currently has 1.2 million common shares of stock outstanding and the stock has a beta of 2.2. It also has $10 million face value of bonds that have five years remaining to maturity and 8 percent coupon with semi-annual payments, and are priced to yield 13.65 percent. If Trumpit issues up to $2.5 million of new bonds, the bonds will be priced at par and have a yield of 13.65 percent; if it issues bonds beyond $2.5 million, the expected yield on the entire issuance will be 16 percent.。Trumpit has learned that it can issue new common stock at $10 a share. The current risk-free rate of interest is 3 percent and the expected market return is 10 percent. Trumpit’s marginal tax rate is 30 percent. If Trumpit raises $7.5 million of new capital while maintaining the same debt-to-equity ratio, its weighted average cost of capital is closest to: A. 14.5 percent. B. 15.5 percent. C. 16.5 percent. 麻烦老师帮忙讲解一下，谢谢！

另外还是刚才那个问题，想问一下就是算出来的，这一个嗯嗯，基准组合的权重设置。的群众还是前后变化的一个变量？delta

8. The Gearing Company has an after-tax cost of debt capital of 4 percent, a cost of preferred stock of 8 percent, a cost of equity capital of 10 percent, and a weighted average cost of capital of 7 percent. Gearing intends to maintain its current capital structure as it raises additional capital. In making its capital-budgeting decisions for the average-risk project, the relevant cost of capital is: A. 4 percent. B. 7 percent. C. 8 percent. 麻烦老师讲解一下，谢谢！

请老师解释一下，这个权重的计算方法，我非常不理解，为什么可以通过这种方式来计算权重？

Additional information: Equity risk premium, Sweden 4.82 percent Risk-free rate of interest, Sweden 4.25 percent Industry debt-to-equity ratio 0.3 Market value of Kruspa’s debt €900 million Market value of Kruspa’s equity €2.4 billion Kruspa’s equity beta 1.3 Kruspa’s before-tax cost of debt 9.25 percent China credit A2 country risk premium 1.88 percent Corporate tax rate 37.5 percent Interest payments each year Level 13. Using the capital asset pricing model, Kruspa’s cost of equity capital for its typical project is closest to: A. 7.62 percent. B. 10.52 percent. C. 12.40 percent. 请老师帮我讲解一下，我找不到公式Ks=rf+beta(rm-rf)中的rm是哪个？谢谢！