中国石油大学(华东)
  1. 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

  2. A: 1 B: 0.25 C: 0.5 D: 0.75
    答案:0.75
  3. data:image/png;base64,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

  4. A: 3 B: 0 C: 1 D: 2
    答案:0
  5. image.png


  6. A:image.png B:image.png C:image.png D:image.png
    答案:
  7. 设样本空间为{1,2,…,10},事件 A={1,3,5,7,9}, 事件B={2,4,6,8,10},事件C={6,7,8,9,10},则=(        ).

  8. A:{1,2,3,4,5,6,7,9} B:{1,2,3,4,5} C:{1,3,5,6,7,9} D:{1,2,3,4}

    答案:{1,2,3,4,5}

  9. A:30.4; B:40; C:35.2; D:49.6

    答案:D:49.6
  10. image.png


  11. A:服从同一离散型分布 B:有相同的方差 C:服从同一指数分布 D:有相同的数学期望
    答案:服从同一指数分布
  12. image.png


  13. A:有相同的方差. B:服从同一离散型分布. C:服从同一指数分布. D:有相同的数学期望.
    答案:服从同一指数分布.
  14. http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/fdd64fac688b41ebb6c685dc5a13cbb4.png

  15. A:image.png B:image.png C:image.png D:image.png
    答案:http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/acf046a6929e4592aefeb0550cc6d25a.png
  16. data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAk8AAABVCAYAAABQFQC6AAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAB2nSURBVHhe7Z29clvJ8beH73VsKZBBBVt7BaTsdEtSoohlb7KOiLISKlGmkImkhEysEusNrGhVipSY2E0UeCVeAUuBAClw4NvA/zR4fmSz2T0f58zBh7afqjZm+nvmANAYOMRuzRuC4ziO4ziOk8X/ax8dx3Ecx3GcDPzw5DiO4ziOU4AfnhzHcRzHcQrww5PjOI7jOE4BfnhyHMdxHMcpwA9PjuM4juM4Bazd4Wlra6sdXcfSW5T6E11iajNED1rOodYay5tbc6jeYpTUXEV/pWg9pvrmdst3yLXL3LFaXfqotaYutWtTswctV07+LnGWPScuJRqan5Sh6Jp7yJ40ll2vC+vY49r9zhNtktaSpbco9Qe5cTkXc8j6JWg5h6hD8LyyRknNXF/yS5Gbp29vvBfYrf5ya3UFPfJerb6BtKfmgPQpZJyWq6Se9NPIqUlYeotS/1ysdRDWWmIxFjyXtRauRw2rB46VD+TU05D21ByU5q1Jbu7UWnLykI9FKldOfiJWA+TkyUH2lJprxPqt0edGfG2HjdI2g3SapGyEZbP0EurJEklOvj8qcm+wP5Zeou0/RMPKa+ktpK9WF2Oup0cZC7H48OHDpc+jR49arQ758B66InPEcpLNEg3Sx9Zroa2N1+KSA/JpvZBOk5StD3INJDE0f024L6B+5ZyDNck4QsZyEAcBPEbz0XQ1kHm51MLKbelLoD3jcVY+XCcuEtLxmFJkfi7LhOrxdfD94HrZI0kt1ubwxBfNF09jLJgeuY3gm8L95CMXIPUxqYHMhTVz4fpNQvafgvvwfU5JLbS8mk5CfWv+pZTk+Pr1azg8PLz0e/nyZXjz5k1rTSOvDZ8T0o5HS2rD88o6cox9gi4HmQPwfPQoc2K/IdDJRy5DIvvrA98PCOaAr4nruS8Ec74XiCVg42Ppp+k4qEWizS1kXi61sHJbekC9c52cA67jeTTf1H5oYB+lrAKqy9cl54DraIy55jvEWtbm8KQtXts0mlsbUeoPYvmGhHqTwvWbhOw/hnadiFVdh2VAa+izjl9//bUdhfDjjz+G7777rp1dh9egMa4LvzZ8Tkg7HqWez2sgc/OxZeuClgN7w6G5dY1K/ftSmpf8NbGg3jXJRcZQrVR8qqcUsqacW6CuJuuA7IfPpdSA7xfl5PvIZZXINfO5lFWxtl/b0abQBZQbxfUc6DU0f05pPkA+ljgXyP2gccl1ivkD1NCkJn3y0RpS67C4fft2OwqLT5xofvfu3VZzBfXHa3St1wW+51JqQzmxNllLigbpKV76cj0Heg3Nf1VQL1y6gDh6xJ7krC9Vj/eER5lfzmuAujFZJVovUsdlWdA10OrxaySlFtqapY7LqlirG8b5BchtCzE5/tK39IL32SpZi/fA88p5DbScVh3ZZw5W/7JGrZpajhK0PlI6jDU/wtITWh45JmI5iNFoFL58+bL45Il/EiWx8sTykw2QD59LYj3mIGsB2Z/WL2KtHrQYwqoZI1WLU+JrwXvXxpadkHMi5k+QTiJ9NGK1S2wlaL1KZN1SZG/Ikeq5Ri0id39kPYrhsdZYIm0x31WR2xP5cSiGx1rjPqzlJ09YOJAbw+fkC/+UwJcDXY70RctDc+ptKLBuXkPTAfRYIpIu69HyWrIKZF1aIxdLBzQd5YSOHlNrm81mi8PTb7/9Fp4/f95q64Ke6BECPZ/3Qebhe4OxnGPctz7FIx/BxwSfo0/SpQS+mwb6lr3TmjjaHMKhPFJHkK7P/vA+kUfTAWmDpGxdSOVK2Tl8X7lweI5YLgvk6xK7CuReQDh996QLa3XDOF+0HMvN0iA/S2rBLx6XlG3V0B4M2Qtfa839tkA9KSkb0GyazoI/t7BeTQc0XRfoK7tnz56F9+/ftxobbT2WjveW26fMBUnZJHxvMJZzjLtAdXmsHFt9ccjPkk0mdW0IuX9El/XLWnwuBWg2kpQNyHkJpesDVBNx9JjTg4zhsmqoN01Str5QnnXdE2KtbhiXlF4EfvGk1CR2IWM2i1y/IdZSi5L11gI1tdoxG6HZNd0Q8OtIdWhcUu/WrVvX7oOy4GtBfkvHQX+8T01HaPlAzLZMtNp8DTnI9XOJkeNTC95Tbs3Y9UGe0mun+fM63C713EZoNu2RSwq+RyQ10faL5rE6WgyI2TjwgT/qyVgrn4yTkI0LJ2YDlNfKrWH1ScRsHPjAH/VzYnNY2xvGCW3BsY0jvSXrAPWO9SwDuVc05jrM/2jkPh9y/WJgf+kRY8rbJ/fTp0/DTz/91M7qg/54n5puk6E18OtB0NxaG9atSS2QC33I/lK1yC4lBdWASHJzLAvsC4fmWu8xsC6IhbUvFlp/gPRaLhnD/WL5gJZz09mUPVnrw1MptGmWrAN00VMXPkaf2FWi7f+6XJOhwTW3rj3tA+lj+0F/YUd2yL/+9S/1r+02GezDusL3X0qM0jVRPsSknhecrntHcZAYuX2kyNkzDb4vEtLX6q8LWFNqD9EnerVi4GflQw6ycx8rhvR4tOzQ0yP8a6LV1bB6RF9WHrLBzn2sGNL3ZWP+8yxEzNaFLvmsTac8MVsutdav+VrxJXlT8Fw0Jvg8Nc4FuSWUJ2azyO3B8usSL2Nyc6To2mNpHOk1yDdmI5DTyh0jFjOErQ8leS1fTV/ab04OPk/ZJDI3QBxiZE4LWUvmR16O9IUP99XihqJLLb4GPk4ha/E5xtKH0HSEjNdATo3cOjmgBq+Xk0vW5PM+/YC1PTxhk2Lk+kkQ12XpWhzv2bKlID+g+efmsUjF18gPkEfLKf261rVyWzlTdXL74H40trById6ql9tHjK65S+M0PXQlNpqnkP5abiBtgNdPkesnSfVpEfPlNt5TTu6Yv5aX+/BYgvtKPy03IfUcLY6w9JyUj7SjnxipmqXkrIPgvWn+OfaacQB2zS/HBjSfFBQDtNgce5e4Etbu8OQ4juM4jrPOfFP3PDmO4ziO4wyNH54cx3Ecx3EK8MOT4ziO4zhOAX54chzHcRzHKcAPT47jOI7jOAX44clxHMdxHKcAPzw5juM4juMU4Icnx3EcxxmcSTg+nrVjZ3J8HDZ5N/zw5DiO4ziDMmsOTiEcHIzauXPv4CBMN/gA5Ycnx3EcxxmQyfhFCA/utTMH3HsQwovxpJ1tFoMenvh/RwZouhil/qtgnXv8I1yDde3vW9z7mv2U5Kqxl7VZt2sjWbf+alzDdd9zldlxOAwPg3/opDA6aHbmMGzit5lL+eQp9wnf54VBsSmpRSpXTi3elxSg2VJiEbNxcv00eB+W1CCVJ6cO70lKbXJz9qnN+7ekBvSfwpS5ZJ0cO0nKphGzdWUy3h30zVuuTZMU0keLSeXJrWNJlMk47DY+uxmfIiRzteT6afC+LdGQtphvLrN/vw3h++12xijYsxJmxxd5t7Z2wzj6xJ6F4+a5f+F74R9/HUzCePfKdzzJedHMwuT4qoa21u3vQ3j77zovQFyvHOnLYIcnaq70vzmsvTGXQPGWLBOqx9eBiwUBskcSjmaLzaEDVEvqUpA/77EU3ouUZUG1+Bqw7xAg+yOJ8eHDh8scjx49arU65JPKJyF/3l8pfB1ShiZWi9u4pGygy17mMmve2O+ftJMIuO5cYnqOXJsmMSgn95HzXCiG94d+IQA9cekL5S/NQ/68r1J4/1KWxyzQ2WnvwXI+dqLn8/bj87A3bdY53Qvnj7fDrnkiGoWDVx/Dx/lp2G81Ns1Ba/d+ODlrp+EsnNzfbg5Q7dRgMt4O9x+fNd4XnJ3cvxEzerBHp6dq9z5p11rT9WVp9zzxFyjGuS8M7s9lFVBdvvlyDriOXzDNd1lr4fuGcW5t7s9l2VBNvodyDriOxphrvjnr+Pr1azg8PLzM9fLly/DmzZvWmobvF8Y5dQnuz2VVaHuYg9a/pkvBfUtjr9H8P//t5o09B1x3LjF9LWhdPKecg1w/rqMx5ppv0Z7ee9X8IzwPH1/l3ddDuZEf49x63J9LDeQ+aPtSxjR8sp5ihXuWZhJe0PN5Zy8szmqjB2FvpzmwPH7RWHoyeRHe7k0vnjPTo9CkXXDyLpJ58XXlaZguYq4OaGrM2dtQ6cOnpTHI4Yk/kWm82PBWCDnncJ2M5bJK8GLFOvlcSl9krtQc8DmN5d7JOYfrZCyXVYH1Yo18LqUmv/76azsK4ccffwzfffddO7sOr0tjuWdyzuE6GctlU5FrkHNJn72M0ryxjw/P238Efgh3Mj4YoPpcLF1tZF6rjuyDz6UsE16PxvKayTmH62Qsl1qgBpDzYmafw3nm86s3i1oa5+Fz34MJHfRw09boIDxtT0I72teRoPGjg+EianQvPLRiRneaHToLn6btfEOofniST7aaT2xgPaFJb0ktqC4XTcelBjyXzM3HgNbLddJeA1kD8D2XUgOsF6LpuNTi9u3b7SgsPnGi+d27d1vNFbROXrdmD0DWAHyvpdRAy0dj2QvNpR+AHjY555BumL2cBPrjpyev99p5HlSfi6UDfG250hWtD6njUg/6Ogf937xnhvS8Xt3aF8gaAHuqiQbpeR4578T00+VXVlfE96wzai1iqIPJTvbXkbPJOBzS1+P7p1eHsIHANYZYur6YhydZLEeIWi8OyiefyECrQbqU1Eb2aMH3h69jKGqtVa6P967VIF1KaiL7syA/9M7X0IXRaBT+9re/Lb7G06i1Rrk23rdWg3Qp6YvMI3vkaDWh4zZNB+S8DnST7Lvw8NVBGJn/2FyH1qlJyibXBknZOFJv+XGofsqH4L3isZxROPjYfiWDr4sYOX3kINfE+9VqkC4lEqnTfOoQ3zMwGd98Xl0TcfPQ7LP+uRNx3vujJ84kvFschJ5m/QXh4j6s+ycXr7WTw8wbzbvDrzGuoabri3l4ksVypAb0pCBq5RuaG0/oVjh8fzZhXeh/U3rVhFNz/2ezWfjy5Uv47bffwvPnz1ttPdD7Juw99Sj3nYtEs2u6IVn83s6TV6HkLhM8f7hAj0cpEmttQ62Z7ykXDu9V6zmbybtA/5bu7D24+IqmIui5V3/rSMae3Xt183l1TcS9UqM7P7Sjm/xQ83vDRe/74TTzXq3RwccwpXueFt+R043mFe7BWgMGv2Gcv3DxQtB0XZG5IClbXygPPYEJ+aQeAtRD/3Ieg3y4WLquyFyQlK0PlAN7jX2HDA19Zffs2bPw/v37VmOjrVvTdUXmgqRsHEufQ8k10HzkPAZfA/rVdBYXf1l3Eh5vt/45f2anQLFWv6keJJSnNCYG7w37ChmKyeJjiLyvcBb7zsTSdUXmgqRsg7H9/eXN1ZySPcvGqEV1YrcmFTE7DruH5+FoWvZ/QEaje+EVPm0rvAer9Drxa4s4TdeXwQ9P2gtY0xG0KD4H0FuL5rlkfMwGSjfU6pOI2TjwgT/qa7E8J3zlPAb5cLF0BM/Ngd6qxXPJ+JgNUN7UOoDVIxGzceADf9TOiSVu3bp17T4oC8rHxdIRVu+yRwlyQzgxG4HcJFb+UuQ6aK6JtPG5BvqEWDqVyTi8CK+v5zht72C9hO5Fid+DInujPLx3rQdLD3iOPsTqpHoA8IE/+jJj6S+qLj5CMb9+4lAeLpaOsHqWvUl4Lhkfsw3C4mZocVjI3LPSr+0uamnUumG9eX38/Dbsvf54+XXd7Pi44FOke+HJER3vRD+LG931Ax6tE9eKxjnw60ti6foy+OHpWwMXE9AYF1XaNHKfAByeU6uRqvktsYr913j69Gn46aef2tkfE+xl6hrQXBNp4/N6zBY3q+6+exheiRs0bt4jQveiXP3DILGeX6SzbJZeghxdkXV4vpweutamH4Cke1no6yc6oMZ/lPGPyHb4fuf6Ddu5e1b6td3l4QR/9j/7d3jbFNo5enLxKRF9atRc563d8fX/g8D+Su+yT8WXfrPp8dnZ1Se3jWy/pRU2qP7kQz/UOWlehQT95tVZ2D9VPrXKPHyvFc1FGAQrdV99ak5AF7NJLD0n5pOyaXauyxnHSOXn9NWn5gR0MZvE0oOYPWXT7FxnjcEvv/xymYfk999/by06Wg6irz41J6CL2Tik0/QWln8qB+JiolGqv2R6NG/+KWlz78yPpq1+Pp03/8a0esj+/PR0fzHeP23dWuADMOY6IjUHpfoUsbiUTbNznTUG06OdNs9Os2+XG3wDLZboq0/NCehitiGhPdq5evJl71lXpkf77fO+yc/qXns9LJ7k2uugkZ2j+VT4XvUsBC+WG7kbVfN6unr9hfnOzv78SFsv+fE+BYhPYflo+px8Kbbof5pE1bH+306JPseXxhpkj9k4Vp0cUIPXy8kla/K5NY6h+VmxJfocXxprkD1m41h1UiA/r5WTR9bj8669cKwcJfocXxprkD1m64PsC3V4zZwaMo+F5Zcbn88kjLfehYfz+P0csTXmrL9+3zfhfeT0BGRvfN6nbyu2RJ/jS2MNssdsg0Kfyry4U/HHMHtCn8R+fpL3kwElvkSpfwP955E+P7E/8c0l5/kBLN8S1uZru5LFkZ6/EGjOhROzEV02kWIgPC/G3K6BOA6PK6FLjIXsSesToF9Acy6cmI2I1dHAmhGHWIy5XQNxHB63CmQ/Wo8AvQKac+HEbF1BHuwXz40xbBox20qhvyLafxg9OAGsV8L3QjL0upGfhPeBMbdrII7D45aJ7EPrDaBHQHMunJhtMEYH4fX37+r9nlMf6CB3eJ53o3qJL1Hqv2AS3oW8nzyIkXp+gJrP5cEOTzkLiZHyg13zy7EBzScFxUA0cuwaWpzlC7QYYMWmcoKUH+yx2jEb0HxikD9EI8eukYorobS2JOUHu+aXY6sB5bLy5dgsuySWpyZ0D9T+w/TRqWtdrLl23yCVP8eukYrLobSmJOUHu+aXYxua0cGTEF4ct/f+rIpJGP/86doN3zYlvkSp/wWT48/hYYVP5HKvI/lB+jLY13aO4zibA/2l3c/h095e+P7Og3Bwr+f/FXacGzTPseNpODhYk6/vVgz9pd704CDrk951xA9PjuM4juM4BfhPFTiO4ziO4xTghyfHcRzHcZwC/PDkOI7jOI5TgB+eHMdxHMdxCvDDk+M4juM4TgF+eHIcx3EcxynAD0+O4ziO4zgF+OHJcRzHcRynAD88OY7jOI7jFOCHJ8dxHMdxnAL88OQ4juM4jlOAH54cx3Ecx3EK8MPTBrG1tdWOlkNJPc13Wf0ue19yqbkniKu91ho91u5pHaE1lkqMlL02y65H5NbU/HL2LyWOMyTVDk+T8W44nrWTAdj0/MQyahDaG4kUjmYnSdk0YrYcZLyWL1UjpwfysaQ2NXPO5/OV9tinNsWmREPaYr4pEFsiBO27JilbX7R+pEgsH0sPNLsluXSNy0Hbc0hXavcYY5m1nPpUOTzNjnfD/ZN2MgCbnp8orcHfcCAxPUd7M5HC0ewkKRugHqSuCzJP17wUw/eFxlwA+UlJ8eHDh0UOeoxBPjn5uhDL++bNm8t1Pnr0qNXqdOmR/CmuKxRvyTKw6mp6iEXu/uF6cInpObIXTSSWj6UHlt3SE9Ya6NGK4cBPg+ckkUg7ly5QnNXLEFCtrr06q6f/4WkyDtuPz9rJAGx6fqJDDbzhcInpa8DffPCi1nQpuG9uLNn5WuQc5PpxHY0x13xTvQE6mPz5z39uZ2VQDdTBmNflOk00H8nXr1/Df/7zn8Uav3z5El6+fBmeP3/eWtPwvLE6GtyfSw3kNdOu4TLQ1iZ1EA71KyWmr4HWj6brC+8bY8ot12Lp8AjBHLkgGtKHSymouWyoJtbtbBb9Dk+z4zA+PA87i8kP4c5oMajHpucnetTAGwrE0tVEvgHJuYT3QGPpL+cx5Hqs9ZEeIudSavLXv/61eB00lnsg5wTXaaL5SP73v/+Ff/7zn4vx7du3w7Nnz8L79+8Xc0mXHgHXyVgutUANIOfLhK8NYznXoJ65WLqa8P6kDAnl19bGx0D2RPbc/pBPE8cZmh6Hp0kYvwjhyeu9dl6bTc9P9KvB31jwhqLpgPYmkhKJtMk5h3S8B9nPEPC1o57UcVk2q9gTcPfu3XZ0wa1bt9rRdZbRo6wBSG+JBul5HjmvjdVHX6hnLpYOYE9KRKL5QCxiNguKkf0TfF3aGjVyfAjki0kuVv/Lgmp32XdntXQ8PM3C8fhdePjqIIymn0L9L702PT/RvQa9kDRJ2fgbB5eUDWg2TQfkvA8yv1ZPQuvO6YHvER6HIqcfC/TJRcPSS/773/+Gv//97+3sij49cqgPnov3pdUgXUokUqf51ITy5+4v+UEsuA+XlA37ISVl42g+kNrI/vti5eF1csVxhqDT4Wmy+DjlVbjXzmuz6fmJPjWsNzv+KEVivWnE3kz4Gw78NN06IfuDcPgeaXu1TqDXGn2enJwsvmqsDfZ33feyK7Qu+RzSyLlW3If78kcpEquXVI9kt6SEWCzmWu/cX4sloJc2yqX5o46UlM1xalN8eLr4q7GT8Hi7fdJX/jO1Tc9P1K5BOaw3AbKVQHmsGP6Gg3pyHmOxViaWrgaUS+sxp89lwvcD69d0uZB/zhrpL+1ms7zfxdD60XRdkbkgKdu3CK3Nun6l66Y8sRi8HjQpIRYby8X9tVgCes0W41t+jjibQdnhaTIOL8Lra0/4+el+a7yCfs+Inty740mrySQn/+w47Da5t7Y6/GZSVv+TMN69eAPf7fKjTJX3SL5JUD7o6JHmEksPeA6CxppIG59rLNbKxNL1hepbuWI2DnzgjzXV6hFQPi6WDlAfkK7QX9j95S9/aWdptH40HYH9kkBv9c1zyfiYLYe++6WR0wfq5taWflQDOnrUalp6wHNISG/JJpBzDThd1xjbw2VAtUvX6qyezMPTLMyaQ8Huu4fh1cH1PxebfT5vRy2N3/3zvTCdT8Pe+f1w7WyAg8/uWBx8CvKPDsLH6VH712uCCvknx+/Cw4/zMG0OPGePXzRHKYaZn8ivMTseh89PPl4cqk4OzUOg9aLCi12z5b4QkQNjTaSNz1eFXB+NsY6ctcN3HcHecgE05uuz1kE/p0Dg6zr6ParUb1I53dCuk4X13CSdZbP0EuSQkN6SZUA9oS8+HopVrNH5A9M8yeJMj+bNQYWeiY3szI+mrX4+nR/tQA/Zn///o5152D9deDRng/nOVcD1XK1Paf5F1CKG+7bUyk8s4tic0PITHWtMj/bnYeeo8boOfAHGXEek5iBXT/OUaJTquxLLl7Jpdq6zxpzff//9MhfJL7/80lpuYuWw9BxeA2AsHzn/+Mc/LuMgf/rTn1rrTbQcRF99ak5AF7OV0CUG5MZyPxlj2Wis2biOSM1BSk+PpcJJzTV4LvjzuJwxIeeclG8sNpcaOUpZRU2nDtWv3DR2eAKn+7o+l8VhRTk8gb75iSbHtQMSp1b+5oWjHZ4kCz/jRRazgZTdIjcu1tvQUA3U4eMU0o/Pc3PEsHLE9BCJ1Fl+pVg5SvQ5vjTWJGXLpdRfkhvP+0uJRcyeiiVSdk6sjoW05dTTfLguNpZiwW0Ya7q+1MqTwzJrOfXp+FMFPaCvvg7Pw96Dgl+LLKFK/lk4Pgzh9JXyt3K1+r/3Ksynp2H/7HH4OePequZataPrkN6ydf2ofBkfsfcB/ZHw9WPM7RqI4/C4VYDeeV/oR+t1Fci6Wm+A9Hwvac6FE7OliPUwBLJXTVJYPrF4PBdyKbk2BM+PsTbnAmQdsnEdxjwGkA2igVo8B8b0CDuBsZQSrD6GYJm1nPpUPzyN7vwQwvlnugMo0K0+P1z7Se1JGP/8Key9/hjEbUFljO6EpopCnfyLnxl4TT8zMAuTCT/Y1MjfHMx26Wb0SZiN7oWH+ztij27S9UVGcZASSuMsv9K6uaT6y7FrpOJKKK2tEetlHXpM+cGu+eXYcijxtcjNUcOva78UB8kh5SftPH+uWFg2GSf9tLicmJQ4zhBsNU+u6s8u+kuy+ydnYWf/NHzUPr3pA33ys/24/dHJnXA07XkQE9DPDFz9d+jq5yewP5R//+j1jRvMHcdxHMdZXwY5PDmO4ziO43yrLP+eJ8dxHMdxnA3GD0+O4ziO4zgF+OHJcRzHcRynAD88OY7jOI7jFOCHJ8dxHMdxnAL88OQ4juM4jlOAH54cx3Ecx3GyCeH/AP1PPZQqK6dbAAAAAElFTkSuQmCC

  17. A:  B:  C:  D: 
    答案:data:image/png;base64,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
  18. image.png


  19. A:1/2 B:2/3 C:2 D:1
  20. http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/da4b00d431e44eef8b145ed0ea491121.png

  21. A:19 B:5 C:35 D:13
  22. image.png


  23. A:0 B:1/2 C:1/4 D:1
  24. image.png


  25. A:N(0,1/2); B:N(20,3); C:N(0,6); D:N(20,6);
  26. image.png


  27. A:0; B:0.2; C:0.1; D:0.3;
  28. data:image/png;base64,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

  29. A: X与Y不相关 B: X 与Y独立 C: DY=0 D: DX=0
  30. 设某工厂生产的产品中,36%为一等品,54%为二等品、10%为三等品,从该厂生产的产品中任取一件,已知它不是三等品,则它是一等品的概率为          。

  31. A:4/5 B:3/5
    C:1/5 D:2/5
  32. image.png


  33. A:image.png B:image.png C:image.png D:image.png
  34. image.png


  35. A:1 B:0 C:0.3 D:0.7
  36. image.png


  37. A:image.png B:image.png C:image.png D:image.png
  38. http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/332f3e6be1e7418cb36edd1da317017b.png

  39. A:image.png B:image.png C:image.png D:image.png
  40. data:image/png;base64,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

  41. A: N(2,1) B: N(0,5) C: N(2,5) D: N(0,1)
  42. image.png


  43. A:1/3 B:2/3 C:1/2 D:4/9
  44. data:image/png;base64,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

  45. A:  B:  C:  D: 
  46. image.png


  47. A:0 B:6 C:30 D:72
  48. http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/a5d91a163f634299974bc1e9d7c96cf0.png

  49. A:image.png B:image.png C:image.png D:image.png
  50. image.png


  51. A:1/9 B:8/9 C:2/3 D:1/2
  52. image.png


  53. A:-1; B:不能确定; C:1; D:0;
  54. 一盒产品中有a只正品,b只次品,有放回地任取两次,第二次取到正品的概率为

  55. A:image.png B:image.png C:image.png D:image.png
  56. image.png


  57. A:image.png B:image.png C:image.png D:image.png
  58. image.png


  59. A:3 B:2.4 C:2.2 D:2.8
  60. 简单随机样本的样本均值和样本方差不一定独立。

  61. A:对 B:错
  62. 设(X,Y)服从二维正态分布,X,Y的相关系数为0,则X,Y一定相互独立。

  63. A:错 B:对
  64. 在抽签模型中,第一个人和最后一个人抽中的概率相等。

  65. A:对 B:错
  66. 根据切比雪夫不等式,随机变量的取值以不小于8/9的概率落在以均值为中心,以3倍的均方差为半径的邻域内。

  67. A:对 B:错
  68. 两个随机事件相互独立且互斥,则至少有一个事件的概率为0。

  69. A:错 B:对
  70. 采用极大似然估计法和矩估计法得到的参数估计结果一定相同。

  71. A:错 B:对
  72. 随机变量X,Y都服从正态分布,则X+Y一定服从正态分布。

  73. A:对 B:错
  74. 除离散型随机变量和连续型随机变量外,还存在既非离散又非连续的随机变量。

  75. A:对 B:错
  76. 两个随机事件互不相容,则一定相互独立。

  77. A:对 B:错
  78. 对于随机变量X,Y,如果EX,EY,E(XY)都存在,则一定满足E(XY)=EX · EY.

  79. A:对 B:错

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