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概率论的英文题
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Consider the experiment of selecting items from a group consisting of three items ( a , b, c ) .
设有一个试验样本为( a , b, c )
(a)Find the sample space S,of the experiment in which two items are selected without replacement.
从这个试验样本中不放回的随机抽取两个数,这样的样本S是?
( b ) Find the sample space S , of the experiment in which two items are selected with replacement.
从这个试验样本中有放回的随机抽取两个数,这样的样本S是?
答案是:
(a) S = {ab,ac,ba,bc,ca,cb)。
(b) S = {aa,ab,ac,ba,bb,bc,ca,cb,cc}。
咨询记录 · 回答于2022-04-06
概率论的英文题
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Consider the experiment of selecting items from a group consisting of three items ( a , b, c ) .设有一个试验样本为( a , b, c ) (a)Find the sample space S,of the experiment in which two items are selected without replacement.从这个试验样本中不放回的随机抽取两个数,这样的样本S是?( b ) Find the sample space S , of the experiment in which two items are selected with replacement.从这个试验样本中有放回的随机抽取两个数,这样的样本S是?答案是:(a) S = {ab,ac,ba,bc,ca,cb)。(b) S = {aa,ab,ac,ba,bb,bc,ca,cb,cc}。
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