±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 405  |  »Ø¸´: 2
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

zdcamel

ľ³æ (ÖøÃûдÊÖ)

ëë³æ

[½»Á÷] ¡¾ÇóÖú¡¿ÇóÖúÓйØÕý̬·Ö²¼µÄÎÊÌâ ÒÑÓÐ2È˲ÎÓë

ÎÒÔÚ¿´Ò»¸ö¹úÍâµÄ½Ì²Ä£¬½²Õý̬·Ö²¼µÄ£¬ÔÚϰÌⲿ·Ö£¬ÓиöÌâÄ¿ÊÇÕâÑùдµÄ£ºIf X is a normally distributed variable with a mean of 24 and standard deviation of 2, find: p(X>28|X>=26).
ÇëÎÊÖмäµÄ¡°|¡±ÊÇʲôÒâ˼Êǰ¡£¿´ÓÀ´Ã»ÓнӴ¥¹ýÕâ¸ö£¬Ð»Ð»Ö¸½Ì£¬²»Ê¤¸Ð¼¤£¡£¡
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

ÎҺܸöÐÔ£¬¹þ¹þ
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

hongjq

Òø³æ (СÓÐÃûÆø)

¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
Ìõ¼þ¸ÅÂÊ,ÔÚ>26ÒÑ·¢ÉúµÄÌõ¼þÏÂ,>28·¢ÉúµÄ¸ÅÂÊ
p(X>28|X>=26)= p(X>28)/ p(X>=26).
Õâ¶ù,X>28·¢Éú,X>=26±ØÈ»ÏÈ·¢Éú.
ÒýÓûØÌû:
Originally posted by zdcamel at 2010-12-22 23:02:08:
ÎÒÔÚ¿´Ò»¸ö¹úÍâµÄ½Ì²Ä£¬½²Õý̬·Ö²¼µÄ£¬ÔÚϰÌⲿ·Ö£¬ÓиöÌâÄ¿ÊÇÕâÑùдµÄ£ºIf X is a normally distributed variable with a mean of 24 and standard deviation of 2, find: p(X>28|X>=26).
ÇëÎÊÖмäµÄ¡°|¡± ...

3Â¥2010-12-29 10:57:31
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 3 ¸ö»Ø´ð

inhaul

гæ (ÕýʽдÊÖ)

¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
Ìõ¼þ¸ÅÂÊP(A|B)¾ÍÊÇʼþ A ÔÚÁíÍâÒ»¸öʼþ B ÒѾ­·¢ÉúÌõ¼þϵķ¢Éú¸ÅÂÊ¡£
2Â¥2010-12-22 23:35:58
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤272Çóµ÷¼Á +13 °¢Ë¹µÙ·Ò2004 2026-03-28 13/650 2026-03-29 19:45 by ÐÜÒ»µ¶
[¿¼ÑÐ] 375Çóµ÷¼Á +4 ÓêÏÄÕûÒ¹ 2026-03-29 4/200 2026-03-29 12:09 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] 332Çóµ÷¼Á +8 ½¶½¶123 2026-03-28 8/400 2026-03-29 10:46 by ÖÜè÷µ¤
[¿¼ÑÐ] ²ÄÁÏѧ˶333Çóµ÷¼Á +11 ±±µÀÏï 2026-03-24 11/550 2026-03-29 08:31 by fmesaito
[¿¼ÑÐ] 0703»¯Ñ§µ÷¼Á£¬Çóµ¼Ê¦ÊÕ +9 ÌìÌìºÃÔËÀ´Éϰ¶° 2026-03-24 10/500 2026-03-28 22:17 by chemzp
[¿¼ÑÐ] 347Çóµ÷¼Á +3 ɽ¶¥¼û¦Á 2026-03-25 3/150 2026-03-28 14:13 by ÌÆãå¶ù
[¿¼ÑÐ] 0703Ò»Ö¾Ô¸9£¬³õÊԳɼ¨£º338£¬ËÄÁù¼¶Òѹý£¬ÓпÆÑо­Àú£¬Çóµ÷¼Á£¡ +4 Zuhui0306 2026-03-25 4/200 2026-03-28 13:07 by ÌÆãå¶ù
[¿¼ÑÐ] 311Çóµ÷¼Á +9 lin0039 2026-03-26 9/450 2026-03-28 13:05 by ÌÆãå¶ù
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤£¨0856£©304ÇóBÇøµ÷¼Á +8 Çñgl 2026-03-27 8/400 2026-03-28 12:42 by ÌÆãå¶ù
[¿¼ÑÐ] ¡¾Çóµ÷¼Á¡¿085601²ÄÁϹ¤³Ìר˶ | ×Ü·Ö272 | +6 ½Å»¬µÄÊØ·¨¹«Ãñ 2026-03-27 6/300 2026-03-28 11:02 by gjlllb
[¿¼ÑÐ] Ò»Ö¾Ô¸ÄϾ©º½¿Õº½Ìì´óѧ²ÄÁÏѧ˶Çóµ÷¼Á +3 @taotao 2026-03-28 3/150 2026-03-28 10:26 by JourneyLucky
[¿¼ÑÐ] 295Çóµ÷¼Á +5 1428151015 2026-03-27 6/300 2026-03-28 04:04 by fmesaito
[¿¼ÑÐ] ²ÄÁÏ292µ÷¼Á +12 éÙËÌ˼ÃÀÈË 2026-03-23 12/600 2026-03-27 15:44 by caszguilin
[¿¼ÑÐ] 307Çóµ÷¼Á +8 ³¬¼¶ÒÁ°º´óÍõ 2026-03-24 9/450 2026-03-27 15:34 by ³¬¼¶ÒÁ°º´óÍõ
[¿¼ÑÐ] Ò»Ö¾Ô¸»ª¶«Àí¹¤´óѧ081700£¬³õÊÔ·ÖÊý271 +6 kotoko_ik 2026-03-23 7/350 2026-03-27 12:29 by »ÝÖÝÅíÓÚêÌ
[¿¼ÑÐ] 0703»¯Ñ§Çóµ÷¼Á +3 µ¤ÇàÄÌ¸Ç 2026-03-26 5/250 2026-03-26 20:11 by macy2011
[¿¼ÑÐ] Ò»Ö¾Ô¸¼ªÁÖ´óѧ²ÄÁÏÓ뻯¹¤303·ÖÇóµ÷¼Á +4 Ϊѧ666 2026-03-24 4/200 2026-03-25 11:27 by BruceLiu320
[¿¼ÑÐ] 318Çóµ÷¼Á +3 plumÀî×Ó 2026-03-23 3/150 2026-03-25 09:42 by ÎíÉ¢ºóÏàÓölc
[¿¼ÑÐ] Çóµ÷¼Á +6 ÑÐÑУ¬½Óµç»° 2026-03-24 7/350 2026-03-24 17:01 by barlinike
[¿¼ÑÐ] 269Çóµ÷¼Á +4 ÎÒÏë¶ÁÑÐ11 2026-03-23 4/200 2026-03-23 21:25 by pswait
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û