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问题 单项选择题

二因素设计的方差分析中，交互作用的效应是F(2,74) =2.86。由此可知( )

A．研究中有78名被试

B．一个因素有2个水平，另一个因素有3个水平

C．一个因素对因变量的作用在另一个因素的不同水平有变化

D．其主效应是不显著的

答案

参考答案：B

选择题
The cost of renting a house in central Fuzhou is higher than ______ in any other area of the city.

A. that
B. this
C. it
D. one
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单项选择题

Which of the following statements about the implications of tests for the efficient market hypothesis (EMH) is least accurate（）

A. By purchasing a market index fund, an investor can match the market return and minimize costs.

B. Other than corporate insiders and market specialists, most traders have monopolistic access to information, which rejects the p-form EMH.

C. Technical trading rules do not consistently provide excess returns after adjusting for trading costs and taxes.
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