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In order to test whether the mean of annual price appreciation of apartments last year in

A. -0.25.
B. -6.
C. -1.96.

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An over-fitting statistical model generates a conclusion that the stock price is positively correlated with the number of mice in Country X. The finding is most likely caused by:

A. data mining bias.
B. time period bias.
C. sample selection bias.

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In regard to Type I and Type II error, which of the following statements is least likely correct？

A. Given the significance level, the probability of Type I error can also be known.
B. Type I error means that the null hypothesis is rejected when it is actually true.
C. Type II error means that the null hypothesis is rejected when it is actually true.

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Assume that country A has an absolute advantage in the production of both potatoes and meat, while country B has a comparative advantage in the production of meat. Which country can benefit from the trade if they trade with each other and why？

A. Country A can benefit from the trade because it has an absolute advantage in both goods.
B. Country B can benefit from the trade because it has a comparative advantage in the production of meat.
C. None. Country B does not have an absolute advantage in each of the two goods, so it will not trade with country A.

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Which of the following conditions is the most likely condition for a firm to maximize the profit？

A. Price equals marginal cost.
B. Marginal revenue equals marginal cost.
C. Average revenue equals marginal cost.

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In order to test whether the mean of annual price appreciation of apartments last year in

A. -0.25. B. -6. C. -1.96.

An over-fitting statistical model generates a conclusion that the stock price is positively correlated with the number of mice in Country X. The finding is most likely caused by:

In regard to Type I and Type II error, which of the following statements is least likely correct？

Assume that country A has an absolute advantage in the production of both potatoes and meat, while country B has a comparative advantage in the production of meat. Which country can benefit from the trade if they trade with each other and why？

Which of the following conditions is the most likely condition for a firm to maximize the profit？

A. -0.25.
B. -6.
C. -1.96.