1 - (0.1)^(1/6)

回答: a seemly easy problemcalligraphy2011-01-27 18:01:29

在十分钟时段内出现流星的几率为X,不出现的几率为 1-X.

每个十分钟都不出现的几率是 (1-X)^6 = 1-0.9 = 0.1

X = 1 - 0.1 ^ (1/6)

所有跟帖: 

回复:1 - (0.1)^(1/6) -calligraphy- 给 calligraphy 发送悄悄话 (17 bytes) () 01/28/2011 postreply 11:29:49

回复:1 - (0.1)^(1/6) -zeal626- 给 zeal626 发送悄悄话 (606 bytes) () 01/30/2011 postreply 00:37:20

回复:回复:1 - (0.1)^(1/6) -calligraphy- 给 calligraphy 发送悄悄话 (546 bytes) () 01/30/2011 postreply 07:40:08

回复:回复:回复:1 - (0.1)^(1/6) -zeal626- 给 zeal626 发送悄悄话 (345 bytes) () 01/30/2011 postreply 23:36:55

回复:回复:回复:回复:1 - (0.1)^(1/6) -calligraphy- 给 calligraphy 发送悄悄话 (80 bytes) () 01/31/2011 postreply 06:16:37

回复:回复:回复:回复:回复:1 - (0.1)^(1/6) -zeal626- 给 zeal626 发送悄悄话 (593 bytes) () 01/31/2011 postreply 23:55:36

You are right, they are comman things, 10m included in 1h, -jinjing- 给 jinjing 发送悄悄话 (363 bytes) () 01/30/2011 postreply 20:59:44

Sorry, I miss ^By *. -jinjing- 给 jinjing 发送悄悄话 (0 bytes) () 01/31/2011 postreply 08:26:11

回复:回复:1 - (0.1)^(1/6) -布衣之才- 给 布衣之才 发送悄悄话 布衣之才 的博客首页 (195 bytes) () 01/31/2011 postreply 09:56:24

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