{"id":18104,"date":"2024-05-02T18:25:19","date_gmt":"2024-05-02T18:25:19","guid":{"rendered":"https:\/\/thanhsoicau68.com\/?p=18104"},"modified":"2024-05-02T18:25:19","modified_gmt":"2024-05-02T18:25:19","slug":"nhung-cap-xien-3-hay-ve-nhat-xo-so-mien-bac-ngay-hom-nay-mien-phi","status":"publish","type":"post","link":"https:\/\/thanhsoicau68.com\/nhung-cap-xien-3-hay-ve-nhat-xo-so-mien-bac-ngay-hom-nay-mien-phi\/","title":{"rendered":"nh\u1eefng c\u1eb7p xi\u00ean 3 hay v\u1ec1 nh\u1ea5t x\u1ed5 s\u1ed1 mi\u1ec1n b\u1eafc ng\u00e0y h\u00f4m nay mi\u1ec5n ph\u00ed"},"content":{"rendered":"\n
L\u00f4 xi\u00ean 3 l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c ch\u01a1i l\u00f4 \u0111\u1ec1 \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi quan t\u00e2m v\u00e0 theo d\u00f5i. Tuy c\u00f3 t\u1ef7 l\u1ec7 tr\u00fang th\u1ea5p h\u01a1n r\u1ea5t nhi\u1ec1u l\u1ea7n so v\u1edbi \u0111\u00e1nh l\u00f4 th\u00f4ng th\u01b0\u1eddng, nh\u01b0ng t\u1ea1i sao v\u1eabn c\u00f3 nhi\u1ec1u ng\u01b0\u1eddi th\u00edch ch\u01a1i thay v\u00ec \u0111\u00e1nh. \u0110\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c t\u1ea1i sao d\u00f9 \u0111\u00e2y l\u00e0 c\u00e1ch ch\u01a1i kh\u00f3 tr\u00fang nh\u01b0ng nhi\u1ec1u ng\u01b0\u1eddi v\u1eabn th\u00edch \u0111\u00e1nh v\u00e0 l\u00f4 xi\u00ean 3 hay v\u1ec1 h\u00f4m nay ch\u00ednh x\u00e1c nh\u1ea5t, m\u1eddi c\u00e1c b\u1ea1n c\u00f9ng tham kh\u1ea3o th\u00f4ng tin \u0111\u01b0\u1ee3c t\u1ed5ng h\u1ee3p d\u01b0\u1edbi \u0111\u00e2y nh\u00e9.<\/p>\n\n\n\n
L\u00f4 xi\u00ean 3 l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c ch\u01a1i l\u00f4 bi\u1ebfn t\u1ea5u c\u1ee7a l\u00f4 th\u01b0\u1eddng, thay v\u00ec b\u1ea1n ch\u1ec9 \u0111\u00e1nh m\u1ed9t con l\u00f4 ho\u1eb7c m\u1ed9t b\u1ed9 s\u1ed1 theo t\u1eebng ng\u00e0y th\u00ec b\u1ea1n s\u1ebd ch\u1ecdn ra m\u1ed9t b\u1ed9 g\u1ed3m 3 s\u1ed1 nh\u01b0: [S\u1ed1 1; s\u1ed1 2; s\u1ed1 3], v\u00ed d\u1ee5 [23;24;25]. N\u1ebfu c\u1ea3 3 con l\u00f4 b\u1ea1n ch\u1ecdn \u0111\u00e1nh c\u00f9ng v\u1ec1 trong KQXS m\u1ed9t ng\u00e0y \u2013 l\u00fac n\u00e0y ng\u01b0\u1eddi ch\u01a1i \u0111\u00e3 \u0103n l\u00f4 xi\u00ean 3.<\/p>\n\n\n\n
M\u1eb7c d\u00f9 ch\u01a1i l\u00f4 xi\u00ean 3 r\u1ea5t kh\u00f3, t\u1ec9 l\u1ec7 tr\u00fang th\u1ea5p nh\u01b0ng v\u00ec l\u00e3i su\u1ea5t thu \u0111\u01b0\u1ee3c l\u00e0 r\u1ea5t cao n\u00ean \u0111\u00e2y v\u1eabn l\u00e0 h\u00ecnh th\u1ee9c ch\u01a1i \u0111\u01b0\u1ee3c nhi\u1ec1u ng\u01b0\u1eddi \u01b0a chu\u1ed9ng. C\u00e1ch ch\u01a1i kh\u00f3 nh\u01b0ng kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng th\u1eafng. N\u1ebfu ng\u01b0\u1eddi ch\u01a1i bi\u1ebft s\u1eed d\u1ee5ng kinh nghi\u1ec7m c\u00f9ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p b\u1eaft s\u1ed1 hi\u1ec7u qu\u1ea3 \u0111\u1ec3 l\u1ecdc ra nh\u1eefng con l\u00f4 hay v\u1ec1 th\u00ec kh\u1ea3 n\u0103ng tr\u00fang xi\u00ean 3 kh\u00f4ng ph\u1ea3i l\u00e0 kh\u00f4ng th\u1ec3 nh\u00e9.<\/p>\n\n\n\n
\u0110\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c t\u1ec9 l\u1ec7 tr\u00fang l\u00f4 xi\u00ean 3 th\u00ec tr\u01b0\u1edbc ti\u00ean b\u1ea1n ph\u1ea3i t\u00ednh \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t tr\u00fang v\u00e0 tr\u01b0\u1ee3t m\u1ed9t con l\u00f4 l\u00e0 bao nhi\u00eau, t\u1eeb \u0111\u00f3 m\u1edbi t\u00ednh \u0111\u01b0\u1ee3c ph\u1ea7n tr\u0103m tr\u00fang l\u00f4 xi\u00ean 3 \u0111\u01b0\u1ee3c. C\u1ee5 th\u1ec3, trong gi\u1ea3i x\u1ed5 s\u1ed1 mi\u1ec1n B\u1eafc m\u1ed7i ng\u00e0y s\u1ebd x\u1ed5 27 con b\u1ea5t k\u1ef3 t\u1eeb 00 \u0111\u1ebfn 99. Nh\u01b0 v\u1eady:<\/p>\n\n\n\n
– T\u1ec9 l\u1ec7 th\u1eafng 100% cho 27 con l\u00f4 l\u00e0 \u0111\u00e1nh 100 con t\u1eeb 00 \u2013 99.<\/p>\n\n\n\n
– T\u1ef7 l\u1ec7 tr\u01b0\u1ee3t khi \u0111\u00e1nh m\u1ed9t con l\u00f4 s\u1ebd l\u00e0 99%.<\/p>\n\n\n\n
T\u00ednh chi ti\u1ebft ta c\u00f3:<\/p>\n\n\n\n
– T\u1ef7 l\u1ec7 tr\u01b0\u1ee3t 1 con l\u00f4 l\u00e0 99%<\/p>\n\n\n\n
– T\u1ef7 l\u1ec7 tr\u01b0\u1ee3t 2 con l\u00f4 l\u00e0 99%*99%<\/p>\n\n\n\n
– T\u1ef7 l\u1ec7 tr\u01b0\u1ee3t 3 con l\u00f4 l\u00e0 99%*99%*99%<\/p>\n\n\n\n
–> T\u1ec9 l\u1ec7 tr\u00fang m\u1ed9t con l\u00f4 s\u1ebd l\u00e0: [1 \u2013 (99% ^ 27)] * 100 ~ 23,7%<\/p>\n\n\n\n
–> T\u1ec9 l\u1ec7 tr\u00fang n con l\u00f4 s\u1ebd l\u00e0: [1 \u2013 [{100-n}% ^ 27)] * 100<\/p>\n\n\n\n
+ X\u00e1c su\u1ea5t tr\u00fang 1 con l\u00f4 l\u00e0 23,7%<\/p>\n\n\n\n
+ X\u00e1c su\u1ea5t tr\u01b0\u1ee3t 1 con l\u00f4 l\u00e0 99%<\/p>\n\n\n\n
+ X\u00e1c su\u1ea5t tr\u01b0\u1ee3t 2 con l\u00f4 l\u00e0 99% ^ 2 ~ 98%<\/p>\n\n\n\n
+ X\u00e1c su\u1ea5t tr\u01b0\u1ee3t 3 con l\u00f4 l\u00e0 99% ^ 3 ~ 97%<\/p>\n\n\n\n
Nh\u01b0 v\u1eady, t\u1ec9 l\u1ec7 tr\u01b0\u1ee3t l\u00f4 gi\u1ea3m d\u1ea7n, tr\u01b0\u1ee3t n con l\u00f4 th\u00ec s\u1ebd gi\u1ea3m n l\u1ea7n.<\/p>\n\n\n\n
C\u00f4ng th\u1ee9c t\u00ednh t\u1ec9 l\u1ec7 \u0103n l\u00f4 xi\u00ean 3:<\/p>\n\n\n\n
– X\u00e1c su\u1ea5t kh\u00f4ng v\u1ec1 c\u1ea3 ba con (tr\u01b0\u1ee3t h\u1ebft) g\u1ecdi l\u00e0 A<\/p>\n\n\n\n
– X\u00e1c su\u1ea5t ch\u1ec9 v\u1ec1 \u0111\u00fang 1 con (tr\u00fang 1, tr\u01b0\u1ee3t h\u1ebft) g\u1ecdi l\u00e0 B<\/p>\n\n\n\n
– X\u00e1c su\u1ea5t ch\u1ec9 v\u1ec1 \u0111\u00fang 2 con (tr\u00fang 2, tr\u01b0\u1ee3t h\u1ebft) g\u1ecdi l\u00e0 C<\/p>\n\n\n\n
–> C\u00f4ng th\u1ee9c t\u00ednh x\u00e1c su\u1ea5t kh\u00f4ng tr\u00fang l\u00f4 xi\u00ean 3: A + B + C = (0,97^27) + (3 * 0,2376 * 0,98^27) + (3 * 0,058 * 0,99^27) = 0,9851 ~ 98,51% .<\/p>\n\n\n\n
Theo k\u1ebft qu\u1ea3 tr\u00ean ta c\u00f3, x\u00e1c su\u1ea5t tr\u00fang l\u00f4 xi\u00ean 3 = 100% \u2013 98,51% = 1,49%. \u0110\u00e2y l\u00e0 m\u1ed9t t\u1ec9 l\u1ec7 tr\u00fang v\u00f4 c\u00f9ng th\u1ea5p, ngh\u0129a l\u00e0 b\u1ea1n ph\u1ea3i ch\u01a1i 100 l\u1ea7n th\u00ec m\u1edbi c\u00f3 c\u01a1 h\u1ed9i tr\u00fang \u0111\u01b0\u1ee3c 1 l\u1ea7n. Nh\u01b0ng t\u1ea1i sao v\u1eabn c\u00f3 ng\u01b0\u1eddi mu\u1ed1n ch\u01a1i l\u00f4 xi\u00ean? L\u00e0 v\u00ec m\u1ed9t khi b\u1ea1n bi\u1ebft t\u00ednh to\u00e1n th\u00ec s\u1ed1 l\u1eddi thu \u0111\u01b0\u1ee3c t\u1eeb vi\u1ec7c tr\u00fang l\u00e0 kh\u00f4ng h\u1ec1 nh\u1ecf.<\/p>\n\n\n\n