随机变量X与Y相互独立,则X与Y不相关。反之若X与Y不相关,也可得X与Y相互独立。
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Anthony is unhappy with the black waitress’service._______
A. 对
B. 错
Anthony and Peter agree with each other regarding others’stereotypes of black people._______
A. 对
B. 错
One stereotype of black people is that they do not tip._____
A. 对
B. 错
Peter believes that everyone around them discriminates against them because they are black. _______
A. 对
B. 错