±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 408  |  »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] Ò»Ö¾Ô¸¹þ¶û±õ¹¤Òµ´óѧ²ÄÁÏÓ뻯¹¤·½Ïò336·Ö +10 ³½ãå5211314 2026-03-26 10/500 2026-03-29 21:01 by ÌÆãå¶ù
[¿¼ÑÐ] 343Çóµ÷¼Á085601 +3 ҪŬÁ¦Ñ§Ï°x 2026-03-29 3/150 2026-03-29 18:35 by wxiongid
[¿¼ÑÐ] µ÷¼ÁÇóԺУÕÐÊÕ +6 º×¾¨¸ë 2026-03-28 6/300 2026-03-29 08:15 by fmesaito
[¿¼ÑÐ] 11408Èí¼þ¹¤³ÌÇóµ÷¼Á +3 Qiuѧing 2026-03-28 3/150 2026-03-28 21:50 by zhq0425
[¿¼ÑÐ] 295²ÄÁϹ¤³Ìר˶Çóµ÷¼Á +7 1428151015 2026-03-27 7/350 2026-03-28 19:58 by S240
[¿¼ÑÐ] 085701»·¾³¹¤³Ì£¬267Çóµ÷¼Á +16 minht 2026-03-26 16/800 2026-03-28 12:16 by zllcz
[¿¼ÑÐ] ²ÄÁÏÇóµ÷¼Á Ò»Ö¾Ô¸¹þ¹¤´ó×Ü·Ö298·Ö£¬Ç°Èý¿Æ223·Ö +5 dongfang59 2026-03-27 5/250 2026-03-28 04:53 by wxiongid
[¿¼ÑÐ] Ò»Ö¾Ô¸ Î÷±±´óѧ ×Ü·Ö282 Ó¢ÓïÒ»62 Çóµ÷¼Á +7 18419759900 2026-03-25 8/400 2026-03-27 16:38 by 18419759900
[¿¼ÑÐ] Ò»Ö¾Ô¸Ö£´ó085600£¬310·ÖÇóµ÷¼Á +5 Àîäì¿É 2026-03-26 5/250 2026-03-27 11:14 by ²»³Ôô~µÄ؈
[¿¼ÑÐ] 292Çóµ÷¼Á +4 ÇóÇóÁËÊÕÏÂÎÒ°É£ 2026-03-26 4/200 2026-03-27 10:37 by zhshch
[¿¼ÑÐ] Ò»Ö¾Ô¸ÉÂʦ´óÉúÎïѧ071000£¬298·Ö£¬Çóµ÷¼Á +5 SYA£¡ 2026-03-23 5/250 2026-03-27 09:29 by ²»³Ôô~µÄ؈
[¿¼ÑÐ] Çóµ÷¼Á£¬Ò»Ö¾Ô¸ ÄϾ©º½¿Õº½Ìì´óѧ´óѧ £¬080500²ÄÁÏ¿ÆÑ§Ó빤³Ìѧ˶ +4 @taotao 2026-03-26 5/250 2026-03-27 08:10 by hypershenger
[¿¼ÑÐ] 317Çóµ÷¼Á +7 µ°»ÆÏÌÈâôÕ 2026-03-26 7/350 2026-03-27 02:29 by fmesaito
[¿¼ÑÐ] 336²ÄÁÏÇóµ÷¼Á +7 ³ÂäÞÓ¨ 2026-03-26 9/450 2026-03-27 00:20 by wxiongid
[¿¼ÑÐ] »úеѧ˶310·Ö£¬ÊýÒ»Ó¢Ò»£¬Ò»Ö¾Ô¸211±¾¿ÆË«·ÇÕÒµ÷¼ÁÐÅÏ¢ +3 @357 2026-03-25 3/150 2026-03-26 16:34 by by.MENG
[¿¼ÑÐ] Ò»Ö¾Ô¸ÄϺ½ 335·Ö | 0856²ÄÁÏ»¯¹¤ | GPA 4.07 | ÓпÆÑо­Àú +6 cccchenso 2026-03-23 6/300 2026-03-25 22:25 by 544594351
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤304ÇóBÇøµ÷¼Á +3 Çñgl 2026-03-25 3/150 2026-03-25 19:03 by Ainin_
[¿¼ÑÐ] 26¿¼ÑÐ-291·Ö-ÏÃÃÅ´óѧ£¨085601£©-ÈáÐÔµç×ÓѧԺ²ÄÁϹ¤³ÌרҵÇóµ÷¼Á +3 min3 2026-03-24 4/200 2026-03-25 18:22 by xcjcqu
[¿¼ÑÐ] ²ÄÁÏ¿¼Ñе÷¼ÁÉú +3 »ÆÁ»Ò»ÃÎǧÄê 2026-03-24 3/150 2026-03-24 17:00 by barlinike
[¿¼ÑÐ] 277·ÖÇóµ÷¼Á£¬¿çµ÷²ÄÁÏ +3 ¿¼Ñе÷¼Álxh 2026-03-24 3/150 2026-03-24 13:52 by JourneyLucky
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û