5962概率中等数值题medium
Time to Climb One Step (Biased Walk)
题目
A walk starts at 0 and each step moves +1 with probability 2/3 and -1 with probability 1/3. Let T be the first time it reaches +1. Find E[T].
解题计时
0:00
提交作答时记录，用于后续平均用时统计。
你的答案
题目
A walk starts at 0 and each step moves +1 with probability 2/3 and -1 with probability 1/3. Let T be the first time it reaches +1. Find E[T].
解题计时
0:00
提交作答时记录，用于后续平均用时统计。
你的答案