智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案

智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案見面課：一起見識(shí)一下隨機(jī)變量及分布1、問題:請(qǐng)問任一隨機(jī)變量一定有（）。選項(xiàng)：A：分布律B：概率密度C：分布函數(shù)答案:【分布函數(shù)】2、問題:在此次見面課中，講到兩個(gè)相鄰微信之間的時(shí)間間隔T服從下面哪個(gè)分布？選項(xiàng)：A:泊松分布B:正態(tài)分布C:二項(xiàng)分布D:指數(shù)分布答案：【指數(shù)分布】3、問題:請(qǐng)問在這次見面課中，涉及到下面哪些分布？選項(xiàng)：A:多項(xiàng)式分布B:泊松分布C:正態(tài)分布D:冪律分布答案:【多項(xiàng)式分布;泊松分布;正態(tài)分布;冪律分布】4、問題:泊松分布僅能描述稀有事件（小概率事件）發(fā)生的次數(shù)這類問題。選項(xiàng)：A:對(duì)B：錯(cuò)答案: 【錯(cuò)】5、問題:相互獨(dú)立的指數(shù)分布的最小值函數(shù)仍是指數(shù)分布。選項(xiàng)：A:對(duì)B：錯(cuò)答案：【對(duì)】見面課：參數(shù)估計(jì)與假設(shè)檢驗(yàn)的那些事1、問題:經(jīng)驗(yàn)分布函數(shù)是（）的近似。選項(xiàng)：A：密度函數(shù)B：分布函數(shù)答案:【分布函數(shù)】2、問題：直方圖是（）的近似。選項(xiàng)：A：密度函數(shù)B：分布函數(shù)智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案66、問題:假設(shè)檢驗(yàn)中的顯著性水平a表示（）。答案:【密度函數(shù)】3、問題:最大次序統(tǒng)計(jì)量的退化的極限分布是（）。選項(xiàng)：A：廣義極值分布B:正態(tài)分布C：兩點(diǎn)分布D:t分布答案:【正態(tài)分布】）。4、問題:假設(shè)隨機(jī)變量X服從參數(shù)為人的泊松分布，則人的矩估計(jì)（）。選項(xiàng)：A:唯一B:不唯一C:無法確定答案:【不唯一】5、問題:以下幾個(gè)統(tǒng)計(jì)量中哪個(gè)表示的不是平均（）。選項(xiàng)：A:平均數(shù)B:眾數(shù)C:中位數(shù)D:方差答案:【方差】智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案選項(xiàng)：A：犯第一類錯(cuò)誤的概率B：犯第二類錯(cuò)誤的概率答案:【犯第一類錯(cuò)誤的概率】見面課：我們聊聊隨機(jī)事件和概率1、問題:設(shè)A,B為隨機(jī)事件，且<imgsrc="/article/UploadPic/2020-5/2020510134959566.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">,P(B)>04h)成立。選項(xiàng)：A:P(A)<P(A|B)B:P(A)WP(A|B)C:P(A)>P(A|B)D:P(A)三P(A|B)答案:【P(A)WP(A|B)】2、問題:設(shè)P(A)=0.5,P(B|A)=0.4,P(A|B)=0.5,則P(A|<imgsrc="/article/UploadPic/2020-5/2020510134959890.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">)=()。選項(xiàng)：A:0.3B:5/7C:0.2D:2/3答案: 【5/7】3、問題:<imgsrc="/article/UploadPic/2020-5/2020510134959184.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">選項(xiàng)：A:<imgsrc="/article/UploadPic/2020-5/2020510134959764.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">B:<imgsrc="/article/UploadPic/2020-5/202051013500556.png"alt=””border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">C:<imgsrc="/article/UploadPic/2020-5/202051013500733.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">D:<imgsrc="/article/UploadPic/2020-5/202051013500242.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">答案: 【<imgsrc="/article/UploadPic/2020-5/202051013500556.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案33、問題:若隨機(jī)變量X,Y獨(dú)立，則智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案11、問題:設(shè)隨機(jī)變量X,Y的方差存在且不等于0，若有】4、問題:<imgsrc="/article/UploadPic/2020-5/202051013500645.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">選項(xiàng)：A：?jiǎn)握{(diào)增大B：?jiǎn)握{(diào)遞減C：保持不變D：增減不定答案:【保持不變】5、問題:設(shè)A,B為兩個(gè)事件，若A與B獨(dú)立，則A與B互不相容。選項(xiàng)：A:對(duì)B:錯(cuò)答案：【錯(cuò)】6、問題:連續(xù)型隨機(jī)變量的密度函數(shù)是唯一確定的。選項(xiàng)：A:對(duì)B:錯(cuò)答案:【錯(cuò)】見面課：話一話隨機(jī)變量的數(shù)字特征和極限定理<imgsrc="/article/UploadPic/2020-5/202051013500520.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">，則X,Y不相關(guān)。選項(xiàng)：A:對(duì)B：錯(cuò)答案: 【對(duì)】2、問題:若隨機(jī)變量<imgsrc="/article/UploadPic/2020-5/202051013500963.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">,且<imgsrc="/article/UploadPic/2020-5/202051013500122.png“alt=””border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">則二維隨機(jī)變量<imgsrc="/article/UploadPic/2020-5/202051013500949.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">服從二維正態(tài)分布。選項(xiàng)：A:對(duì)B：錯(cuò)答案: 【錯(cuò)】智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案智慧樹知到《概率論與數(shù)理統(tǒng)計(jì)》見面課答案55、問題:若隨機(jī)變量X,Y滿足<imgsrc="/article/UploadPic/2020-5/202051013500744.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">。選項(xiàng)：A:對(duì)B：錯(cuò)答案: 【對(duì)】4、問題:若<imgsrc="/article/UploadPic/2020-5/202051013500399.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">,與X獨(dú)立同分布，則當(dāng)<img src="/article/UploadPic/2020-5/202051013500897.png" alt=””border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">時(shí)，<imgsrc="/article/UploadPic/2020-5/202051013500530.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">依概率收斂于2。選項(xiàng)：A:對(duì)B：錯(cuò)答案: 【錯(cuò)】<imgsrc="/article/UploadPic/2020-5/202051013500378.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">，則<imgsrc="/article/UploadPic/2020-5/202051013500848.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">。選項(xiàng)：A:對(duì)B：錯(cuò)答案: 【錯(cuò)】6、問題:將一枚硬幣重復(fù)擲n次，以X和Y分別表示正面向上和反面向上的次數(shù)，則X和Y的相關(guān)系數(shù)等于()。選項(xiàng)：A:-1B:0C:1D:無法確定答案: 【-1】7、問題:已知隨機(jī)變量<imgsrc="/article/UploadPic/2020-5/202051013501337.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">且<imgsrc="/article/UploadPic/2020-5/202051013501632.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">，則參數(shù)<imgsrc="/article/UploadPic/2020-5/202051013501348.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">值是()。選項(xiàng)：A:<imgsrc="/article/UploadPic/2020-5/202051013501423.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);"><imgsrc="/article/UploadPic/2020-5/202051013501269.png“ alt=””border="0"onload="returnimgzoom(this,600);“style="cursor:pointer;"onclick="javascript:window.open(this.src);"><imgsrc="/article/UploadPic/2020-5/202051013501382.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);"><imgsrc="/article/UploadPic/2020-5/202051013501868.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">答案: 【<imgsrc="/article/UploadPic/2020-5/202051013501269.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">】8、問題:已知隨機(jī)變量<imgsrc="/article/UploadPic/2020-5/202051013501985.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">的方差存在，且滿足不等式<imgsrc="/article/UploadPic/2020-5/202051013501703.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">則一定有()。選項(xiàng)：A:<imgsrc="/article/UploadPic/2020-5/202051013501406.png"alt=""border="0"onload="returnimgzoom(this,600);“style="cursor:pointer;"onclick="javascript:window.open(this.src);”><imgsrc="/article/UploadPic/2020-5/202051013502164.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);"><imgsrc="/article/UploadPic/2020-5/202051013502489.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">答案: 【<imgsrc="/article/UploadPic/2020-5/202051013502489.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">】9、問題:隨機(jī)變量<imgsrc="/article/UploadPic/2020-5/202051013502128.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">獨(dú)立同分布且服從相同參數(shù)人的泊松分布，則下面隨機(jī)變量序列中不滿足切比雪夫大數(shù)定律條件的是()。選項(xiàng)：A:<imgsrc="/article/UploadPic/2020-5/202051013502469.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);"><img src="/article/UploadPic/2020-5/202051013502105.png" alt=””border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);"><imgsrc="/article/UploadPic/2020-5/202051013502813.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);"><imgsrc="/article/UploadPic/2020-5/202051013502101.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">答案:【<imgsrc="/article/UploadPic/2020-5/202051013502813.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">10、問題:已知隨機(jī)變量<imgsrc="/article/UploadPic/2020-5/202051013502433.png"alt=""border="0"onload="returnimgzoom(this,600);"style="cursor:pointer;"onclick="javascript:window.open(this.src);">的期望<imgsrc="/article/UploadPic/2020-5/202051013502772.png"alt=""border="0"onload="returnimgzoom(this,600)