Zero correlation does not necessarily imply independence between the two variables. This statement is O a. True O b. Depends on mean value of X and Y O c. Depends on r O d. False
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- Give typing answer with explanation and conclusion Suppose that the government must undertake an irreversible policy decision regarding the extent of air pollution regulation. The government is making this decision in a situation of uncertainty, however. In particular, there is some probability p that the benefits will remain the same as they are this year for all future years, but there is some probability 1 - p that benefits will be less in all future years. If we take into consideration the multiperiod aspects, should we err on the side of overregulation or underregulation, compared to what we would do in a single-period choice?With Panel Data, if we assume that the individual effects vi are not correlated with the regressors Xit (i.e. E(vi|Xit) = 0), which one of the following statements is correct: The Fixed Effects estimator is not consistent. Both the OLS and the Random Effects estimators are not consistent. The OLS estimator is not consistent, but the Random Effects estimator is consistent. The OLS and the Random Effects estimator are consistent. All of the above. None of the aboveHow would you describe a correlation of -1? Group of answer choices There is a perfect linear relationship between x and y. There is a strong positive relationship between x and y. There is no relationship between x and y. There is a weak negative relationship between x and y. thanks
- (Ch7) Historically, the default rate on a commercial loan is 20 percent. If a bank makes 100 commercial loans, what is the approximate probability that more than 25 loans will result in default? (hint: use the normal approximation to the binomial. And, by continuity correction, you should use 25.5 as the new cutoff.) Question 2Select one: a. 0.0668 b. 0.0838 c. 0.2000 d. 0.0336Question 2 Suppose we are interested in the effect of attending a particular school on students’ income in adulthood. Let malei be a dummy variable which is equal to 1 if student i is male. Translate the following mathematical expression into plain English E(Yi(1) − Yi(0)|malei = 1). Full explain this question and text typing work only We should answer our question within 2 hours takes more time then we will reduce Rating Dont ignore this line .If a change in variable X causes a change in variable Y, variable Xis called the Select one: a. independent variable b. dependent variable c. explanatory variable d. B and C
- What is meant by dummy variable and how dummy variables are constructed?In the equation S = 130 – 2T, where S is hot chocolate sales and T is temperature, sales _____ if temperature increases by 10 degrees. A. increase by 20 B. decrease by 20 C. increase by 2 D. decrease by 2Consider the following model: yhat = 2.6+-0.9x² The prediction of y is yhat. What is the estimated marginal effect of x on y when x=2.7? PLZ MAKE SURE THIS IS RIGHT!!!
- Suppose that a high school student is preparing to take the SAT exam. Explain why his or her eventual SAT score is properly viewed as a random variable.As a manager of a small software retailing company, you are concerned with projected profit next year. While profit can be determined as the difference between sales and maintenance cost, or in symbols, P = S - M, where P is profit, S is sales, and M is maintenance cost including technical support. It is argues that when sales goes up so does maintenance cost because the cost of technical support will go up. Further, it is measured that the correlation between S and M is 0.8. Now given the figure that sales next year is expected to be $300 thousand with standard deviation of $4 thousand and maintenance cost is expected to be $150 thousand with standard deviation of $6 thousand, what would be the expected profit and its standard deviation you will include in your report?Why does dependent variables must covariate in the multivariate analyses like MANOVA/MANCOVA? What happens if they don't covariate, will you be able to proceed in multivariate analyses?
