将一枚均匀硬币分别抛 10 次和 100 次,抛 10 次出现正面的频率记为 a, 抛 100 次出现正面的频率记为 b ,则 | a-0.5 | > | b-0.5 |一定成立。 A. √ B. ×
A.
正确
B.
错误
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举一反三
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