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alfonso carter

alfonso c.

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A multiple regression model with four explanatory variables is estimated using 25 observations resulting in $$SSE = 660$$ and $$SST = 1,000$$. Which of the following is the correct value of $$R^2$$? Multiple Choice 0.16 0.84 0.34 0.66

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What is returned when the following method is called with: foo(17); public static int foo(int n) { if (n<=0) { return 1; } else if (n%2 == 0) { return n/2; } else { return foo(n/2); } } 9 2 4 1

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Which of the following is the main principle of mercantilism? Check all that apply. It is in a country's best interests to maintain a trade surplus. It is in a country's best interests to impose tariffs and prevent foreign countries from importing goods to the country. A country should make as many goods as possible by itself to prevent the outflow of wealth.

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• In an old episode of Batman from the 1960s Batman and Robin are lost in a maze. Robin says to hold one hand against the wall of a maze then follow it keeping your hand always against the wall until you find the exit. • Is Robin correct? Will this always work? Why or why not?

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Japan has one the highest population growth rates in the world. False True I don't know

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A firm with return on equity 20% and beta 0.9 just distributed all its earnings ($12 per share) as dividends. The expected market return is 15% and the risk-free rate is 5%. The firm can keep distributing all its earnings to shareholders each year or retain 25% for reinvestment. What is the price of the stock if the firm decides to retain 25% of its earnings each year moving forward?

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Can anyone calculate Q2, please? For Q1 I got 44.6 which is correct. 1. Given the following data (say, test scores of a certain student), forecast the next value y6 using weighted moving average with weights u = 1, = 0.8,3 = 0.2 ( is the weight for the most recent value). Answer: y6 = #1 2 3 4 5 51 47 45 44 45 2. Fit the data in the previous question using AR(1). Do not center the data in this case because the length of the time series is so short that centering y does not make the mean of lagged variables to zero. (a) Denoting the variable with no lag by y and the one with lag 1 by yt-1, the regression line is (use 1mO) Yt= #2 #3 [3/t1 *Disregard the fact that this regression line is not statistically significant be cause of extremely small sample size

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4. Determine CT for each circuit of Figure 10-33d. $C_T$ 500 nF $C_1$ $C_2$ $C_3$ 1 µF 1 µF $C_4$ 2 µF $C_5$ $C_6$ 3 µF 6 µF

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A video store manager observes that the number of videos sold seems to vary inversely as the price per video. If the store sells 570 videos per week when the price per video is $12.60, how many does he expect to sell if he raises the price to $14.90? Round your answer to the nearest integer if necessary.

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General Questions Answer only 4 of the 8 questions. The Lab instructor will indicate what questions have to be answered. 1. Is there a fundamental unit associated with Rockwell hardness number? Explain. 2. How may one determine if the specimen was too thin to be checked with a particular Rockwell scale? 3. List three factors that may cause inaccuracy of a hardness test. 4. What are the advantages of Brinell hardness testing over Rockwell hardness testing? 5. What are the advantages of Rockwell hardness testing over Brinell hardness testing? 6. What are the limitations of Brinell and Rockwell hardness testing? 7. List specific two applications each where the Brinell and Rockwell tests could be favored. 8. List two applications where Brinell and Rockwell tests could not be used for hardness testing. Why?

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