统计题(英语),Many random number generators allow users to specify
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统计题(英语),
Many random number generators allow users to specify the range of the random numbers to be produced.Supposed that you specify that the random number Y can take any value between 0 and 2.Then the density curve of the outcome has constant height between 0 and 2,and height 0 elsewhere.
(a) Is the random variable Y discrete or continuous?Why?
(b) What is the height of the density curve between 0 and Draw a graph of the density curve.
(c) Use your graph from (b) and the fact that the probability is area under the curve to find P(Y
英文我能看懂——!
Many random number generators allow users to specify the range of the random numbers to be produced.Supposed that you specify that the random number Y can take any value between 0 and 2.Then the density curve of the outcome has constant height between 0 and 2,and height 0 elsewhere.
(a) Is the random variable Y discrete or continuous?Why?
(b) What is the height of the density curve between 0 and Draw a graph of the density curve.
(c) Use your graph from (b) and the fact that the probability is area under the curve to find P(Y
英文我能看懂——!
这不就是均匀分布么.
连续的,why,用定义解释.因为连续随机变量的定义就是一切可能取值充满区间(a,b),在这个区间内有无穷不可列个实数.
密度函数p(y)=1/2就是height,图就是在y属于(0,2)时候density是一条直线,y在区域外时都是0.
P(Y
连续的,why,用定义解释.因为连续随机变量的定义就是一切可能取值充满区间(a,b),在这个区间内有无穷不可列个实数.
密度函数p(y)=1/2就是height,图就是在y属于(0,2)时候density是一条直线,y在区域外时都是0.
P(Y
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