a seemly easy problem

You are told that on January 25, 2011 from 10:00 – 11:00 in your town you have a 0.90 (90% chance) probability of seeing a shooting star in the night sky in that hour.  Given that the probability of seeing a shooting star is constant throughout the hour, what is the probability of seeing a shooting star in the first 10 minutes?

所有跟帖： 

• P(E)=0.9*(10/60)=.15 -jinjing- ♀ (0 bytes) () 01/27/2011 postreply 20:06:49

• 回复：P(E)=0.9*(10/60)=.15 -calligraphy- ♂ (132 bytes) () 01/28/2011 postreply 05:22:51

• 好题。 呵呵 -guest007- ♂ (0 bytes) () 02/04/2011 postreply 12:50:59

• "a shooting star is constant throughout the hour,"What it means -jinjing- ♀ (62 bytes) () 01/28/2011 postreply 09:07:33

• 回复："a shooting star is constant throughout the hour,"What it me -calligraphy- ♂ (204 bytes) () 01/28/2011 postreply 10:05:34

• toatally different story. -jinjing- ♀ (0 bytes) () 01/28/2011 postreply 11:50:53

• 1 - (0.1)^(1/6) -布衣之才- ♂ (145 bytes) () 01/28/2011 postreply 11:07:12

• 回复：1 - (0.1)^(1/6) -calligraphy- ♂ (17 bytes) () 01/28/2011 postreply 11:29:49

• 回复：1 - (0.1)^(1/6) -zeal626- ♂ (606 bytes) () 01/30/2011 postreply 00:37:20

• 回复：回复：1 - (0.1)^(1/6) -calligraphy- ♂ (546 bytes) () 01/30/2011 postreply 07:40:08

• 回复：回复：回复：1 - (0.1)^(1/6) -zeal626- ♂ (345 bytes) () 01/30/2011 postreply 23:36:55

• 回复：回复：回复：回复：1 - (0.1)^(1/6) -calligraphy- ♂ (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- ♂ (593 bytes) () 01/31/2011 postreply 23:55:36

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

• Sorry, I miss ^By *. -jinjing- ♀ (0 bytes) () 01/31/2011 postreply 08:26:11

• 回复：回复：1 - (0.1)^(1/6) -布衣之才- ♂ (195 bytes) () 01/31/2011 postreply 09:56:24

• 钩钩也不可全信 -wushuihe- ♂ (2982 bytes) () 01/30/2011 postreply 06:36:09

• 你说得对，我算的是出现（任意颗）流星的几率，不是出现一颗流星的几率 -布衣之才- ♂ (0 bytes) () 01/31/2011 postreply 10:00:46

• You great.As time is continouse ,I give the Prob. for any time -jinjing- ♀ (133 bytes) () 01/31/2011 postreply 18:21:24

• Let me say something from Math. -jinjing- ♀ (388 bytes) () 01/31/2011 postreply 08:06:13

• new development -calligraphy- ♂ (250 bytes) () 02/01/2011 postreply 07:03:17