
A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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How can I solve this question 7.25?
![7.25. Let X₁, X2, ... be a sequence of independent and identically
distributed continuous random variables. Let N 2 be such that
X₁ ≥ X₂ ≥ … ≥ XN-1 < XN
That is, N is the point at which the sequence stops decreasing. Show
that E[N] = e.
Hint: First find P{N ≥n}.](https://content.bartleby.com/qna-images/question/c0618968-6b5a-406b-a92d-661b061825b7/43d96fde-986c-445d-9a78-d8d21e391cf7/9yfr8b5_thumbnail.jpeg)
Transcribed Image Text:7.25. Let X₁, X2, ... be a sequence of independent and identically
distributed continuous random variables. Let N 2 be such that
X₁ ≥ X₂ ≥ … ≥ XN-1 < XN
That is, N is the point at which the sequence stops decreasing. Show
that E[N] = e.
Hint: First find P{N ≥n}.
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