2014年4月自学考试《概率论与数理统计(经管类)》专家命题预测试卷(2)
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- A.<img src="//img1.yqda.net/question-name/7d/2794180e4603e96b662a3e27ddd06f.jpg" alt="" />
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- A.P(AB)
- B.P(A)
- C.P(B)
- D.1
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下列函数中，可以作为连续型随机变量的概率密度的是
- A.<img src="//img1.yqda.net/question-name/79/d487787e5b3775c9ad97a1a2ce9b9a.jpg" alt="" />
- B.<img src="//img1.yqda.net/question-name/ec/a5a62a74ff92fbecdefca0ba3c317c.jpg" alt="" />
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设随机变化量X的概率密度为
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将一枚均匀硬币反复抛掷10次，已知前三次抛掷中恰出现了一次正面，则第二次出现正面的概率为（ ）
- A.<img src="//img1.yqda.net/question-name/21/f93971844804c832846d90ebf0a672.jpg" alt="" />
- B.<img src="//img1.yqda.net/question-name/1c/c644ac4aa93effaaf2fbe29e11c498.jpg" alt="" />
- C.<img src="//img1.yqda.net/question-name/11/872b8749769a39096abc18730e8806.jpg" alt="" />
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- B.<img src="//img1.yqda.net/question-name/8b/04f0a6b59214abfd5f000de58d7a95.jpg" height="22" width="77" />
- C.<img src="//img1.yqda.net/question-name/34/864c1d6d7e2eb9ff6cc3627b8873fb.jpg" height="28" width="91" />
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