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发布时间:2023-10-22 14:33:53

[单项选择]In order to test if Stock A is more volatile than Stock B, prices of both stocks are observed to construct the sample variance of the two stocks. The appropriate test statistics to carry out the test is the:()
A. F - test.
B. t - test.
C. Z - test.

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[单项选择]Changing fashions are nothing more than the intentional creation of waste.( )
A. 不断变换的时尚潮流只不过是在刻意地制造浪费。
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