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(3)
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- A.<img src="//img1.yqda.net/question-name/dd/d3ad9ca23ede9f65eae2cd2ace54f8.jpg" alt="" />
- B.<img src="//img1.yqda.net/question-name/de/44c01934ba4537c692b792feb1306f.jpg" alt="" />
- C.<img src="//img1.yqda.net/question-name/97/d645b466efc683905a074dd0bea566.jpg" alt="" />
- D.<img src="//img1.yqda.net/question-name/63/93fc89a720b0d345471f0686bc0a52.jpg" alt="" />
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- A.<img src="//img1.yqda.net/question-name/ff/3d45f860cc45289cd55351f1dd0da3.jpg" alt="" />
- B.<img src="//img1.yqda.net/question-name/9a/3506bdd426ee957f778950d4314872.jpg" alt="" />
- C.<img src="//img1.yqda.net/question-name/16/102ba08c5b9364edcacff33ad80f2f.jpg" alt="" />
- D.<img src="//img1.yqda.net/question-name/97/f0399c1a196fec585a7bea8abd2d00.jpg" alt="" />
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- A.<img src="//img1.yqda.net/question-name/be/08909850ea701e16e71d11396ec736.jpg" alt="" />
- B.<img src="//img1.yqda.net/question-name/1c/269e40433f34a03319be37e3968615.jpg" alt="" />
- C.<img src="//img1.yqda.net/question-name/10/1eb6870f330f478cbd5cc8ee402974.jpg" alt="" />
- D.5
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(5P119)X服从参数为1的泊松分布，则有（ ）
- A.<img src="//img1.yqda.net/question-name/db/8c05ecd8af9d248084eefd7a03ebc4.jpg" alt="" />
- B.<img src="//img1.yqda.net/question-name/d2/c514467748e027a066c6728914ea5e.jpg" alt="" />
- C.<img src="//img1.yqda.net/question-name/6d/87657fb84ad3205a69cc52ffc27221.jpg" alt="" />
- D.<img src="//img1.yqda.net/question-name/a2/d07e46474d5294e7fc54dcb3dd23ad.jpg" alt="" />
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- A.<img src="//img1.yqda.net/question-name/b2/9b855016c84e594687bb9a3377882d.jpg" alt="" />
- B.<img src="//img1.yqda.net/question-name/c4/f4885f407d5070bd9748937a66fff1.jpg" alt="" />
- C.<img src="//img1.yqda.net/question-name/73/f9137126e29223ddcf7eff9e1ff50d.jpg" alt="" />
- D.<img src="//img1.yqda.net/question-name/56/0ccdaf0d5220d56b209e1b8c6dc71f.jpg" alt="" />
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- A.1
- B.<img src="//img1.yqda.net/question-name/50/8b495ee3e1eb255d816889bd5ffc1c.jpg" alt="" />
- C.<img src="//img1.yqda.net/question-name/ef/382c1c84b6e6692e718977c5c0bd15.jpg" alt="" />
- D.<img src="//img1.yqda.net/question-name/e9/69a7f24968efe3d6b3e925f642f21c.jpg" alt="" />
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若随机变量X的方差D(X)存在，
≤（ ）
- A.D(X)
- B.1
- C.<img src="//img1.yqda.net/question-name/d8/c50c2a4e8a83c6c7007747ce67f5ba.jpg" alt="" />
- D.a<sup>2</sup>D(X)
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- A.<img src="//img1.yqda.net/question-name/29/9a2dd567c7a2aa7bab93cfe7025dd4.jpg" alt="" />
- B.<img src="//img1.yqda.net/question-name/7f/b5cfaa32d654b5347b8500ec4721bb.jpg" alt="" />
- C.<img src="//img1.yqda.net/question-name/68/c033b68d38d91d5d5ffc4846029b54.jpg" alt="" />
- D.<img src="//img1.yqda.net/question-name/09/83a5f28ba88871bbbc211146ffb127.jpg" alt="" />
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掷两颗骰子，它们出现的点数之和等于7的概率为（ ）
- A.<img src="//img1.yqda.net/question-name/62/e18d9dbc8e81a6f1315f2576cc8d01.jpg" alt="" />
- B.<img src="//img1.yqda.net/question-name/00/9e74b2cfe9fac86da32fc039a45ce6.jpg" alt="" />
- C.<img src="//img1.yqda.net/question-name/1f/4b0634bd5a59cddbea0ff897bd3eaf.jpg" alt="" />
- D.<img src="//img1.yqda.net/question-name/1f/e74c1a9a1f3948c8d3ecf3d983fa37.jpg" alt="" />
我
≤（ ）
