作者ppppppppp (凹嗚嗚)
看板Statistics
標題[問題] 指數分配(條件期望值??)
時間Wed Apr 26 21:10:26 2023
想請問一題統計
不太清楚第(3)小題要怎麼解
Printers A and B are assigned to print two large files in parallel now.
The file sizes are different and thus the processing time will be different.
Assume the processing time for printer A is exponentially distributed with
mean 5 minutes, and independent of printer A, processing time for B is
exponentially distributed with mean 2 minutes.
(1) What is the average amount of time till that either
printer A or printer B completes the printing task?
(2) Given printer B completes the printing task first,
what is the expected completion time
for the printing task associated with B?
(3) Given printer B completes the printing task first,
what is the average amount time that both files are printed and ready?
麻煩了 謝謝 <(_ _)>
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1F：→ yhliu: E[max(X1,X2)|X2<X1] = E[X1|X2<X1] 04/28 06:52
2F：→ ppppppppp: 原來如此 謝謝回答 04/28 19:11