{"id":3769,"date":"2023-07-15T15:42:15","date_gmt":"2023-07-15T15:42:15","guid":{"rendered":"https:\/\/statorials.org\/ko\/t-%e1%84%80%e1%85%a5%e1%86%b7%e1%84%8c%e1%85%a5%e1%86%bc%e1%84%8b%e1%85%b4-%e1%84%8c%e1%85%a1%e1%84%8b%e1%85%b2%e1%84%83%e1%85%a9%e1%84%85%e1%85%b3%e1%86%af-%e1%84%80%e1%85%a8%e1%84%89%e1%85%a1\/"},"modified":"2023-07-15T15:42:15","modified_gmt":"2023-07-15T15:42:15","slug":"t-%e1%84%80%e1%85%a5%e1%86%b7%e1%84%8c%e1%85%a5%e1%86%bc%e1%84%8b%e1%85%b4-%e1%84%8c%e1%85%a1%e1%84%8b%e1%85%b2%e1%84%83%e1%85%a9%e1%84%85%e1%85%b3%e1%86%af-%e1%84%80%e1%85%a8%e1%84%89%e1%85%a1","status":"publish","type":"post","link":"https:\/\/statorials.org\/ko\/t-%e1%84%80%e1%85%a5%e1%86%b7%e1%84%8c%e1%85%a5%e1%86%bc%e1%84%8b%e1%85%b4-%e1%84%8c%e1%85%a1%e1%84%8b%e1%85%b2%e1%84%83%e1%85%a9%e1%84%85%e1%85%b3%e1%86%af-%e1%84%80%e1%85%a8%e1%84%89%e1%85%a1\/","title":{"rendered":"T \ud14c\uc2a4\ud2b8\uc758 \uc790\uc720\ub3c4\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\ud1b5\uacc4\uc5d0\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub418\ub294 \uc138 \uac00\uc9c0 t-\uac80\uc815\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/ko\/\u1111\u116d\u1107\u1169\u11ab-t-\u1100\u1165\u11b7\u110c\u1165\u11bc\/\" target=\"_blank\" rel=\"noopener\">\uc77c\ud45c\ubcf8 t-\uac80\uc815<\/a> : \ubaa8\uc9d1\ub2e8 \ud3c9\uade0\uc744 \ud2b9\uc815 \uac12\uacfc \ube44\uad50\ud558\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/ko\/\u1103\u116e-\u1109\u1162\u11b7\u1111\u1173\u11af\u110b\u1173\u11af-\u1110\u1166\u1109\u1173\u1110\u1173\u1112\u1162-\u1107\u1169\u1109\u1166\u110b\u116d\/\" target=\"_blank\" rel=\"noopener\">2-\ud45c\ubcf8 t-\uac80\uc815<\/a> : \ub450 \ubaa8\uc9d1\ub2e8 \ud3c9\uade0\uc744 \ube44\uad50\ud558\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/ko\/\u110a\u1161\u11bc\u110b\u1173\u11af-\u110b\u1175\u1105\u116e\u1102\u1173\u11ab-\u1111\u116d\u1107\u1169\u11ab-t-\u1100\u1165\u11b7\u110c\u1165\u11bc\/\" target=\"_blank\" rel=\"noopener\">\ub300\uc751 \ud45c\ubcf8 t-\uac80\uc815<\/a> : \ud55c \ud45c\ubcf8\uc758 \uac01 \uad00\uce21\uce58\uac00 \ub2e4\ub978 \ud45c\ubcf8\uc758 \uad00\uce21\uce58\uc640 \uc5f0\uad00\ub420 \uc218 \uc788\ub294 \uacbd\uc6b0 \ub450 \ubaa8\uc9d1\ub2e8\uc758 \ud3c9\uade0\uc744 \ube44\uad50\ud558\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uac01 t-\uac80\uc815\uc744 \uc2e4\ud589\ud560 \ub54c \uac80\uc815 \ud1b5\uacc4\ub7c9\uacfc \ud574\ub2f9 <strong>\uc790\uc720\ub3c4\ub97c<\/strong> \uacc4\uc0b0\ud574\uc57c \ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uac01 \ud14c\uc2a4\ud2b8 \uc720\ud615\uc5d0 \ub300\ud55c \uc790\uc720\ub3c4\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>1-\ud45c\ubcf8 t-\uac80\uc815: df = n-1<\/strong> \uc5ec\uae30\uc11c <em>n<\/em> \uc740 \ucd1d \uad00\uce21\uce58 \uc218\uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>2-\ud45c\ubcf8 t-\uac80\uc815: df = n <sub>1<\/sub> + n <sub>2<\/sub> \u2013 2<\/strong> \uc5ec\uae30\uc11c <em>n <sub>1<\/sub><\/em> , <em>n <sub>2<\/sub><\/em> \ub294 \uac01 \ud45c\ubcf8\uc758 \ucd1d \uad00\uce21\uac12\uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>\uc30d\uc744 \uc774\ub8e8\ub294 \ud45c\ubcf8 t-\uac80\uc815: n-1<\/strong> \uc5ec\uae30\uc11c <em>n<\/em> \uc740 \uc30d\uc758 \ucd1d \uac1c\uc218\uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uc608\ub294 \uc2e4\uc81c\ub85c \uac01 t-\uac80\uc815 \uc720\ud615\uc5d0 \ub300\ud55c \uc790\uc720\ub3c4\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>\uc608 1: \ub2e8\uc77c \ud45c\ubcf8 t-\uac80\uc815\uc758 \uc790\uc720\ub3c4<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">\ud2b9\uc815 \uac70\ubd81\uc774 \uc885\uc758 \ud3c9\uade0 \ubb34\uac8c\uac00 310\ud30c\uc6b4\ub4dc\uc778\uc9c0 \uc54c\uace0 \uc2f6\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uc815\ubcf4\ub97c \uc0ac\uc6a9\ud558\uc5ec \ubb34\uc791\uc704\ub85c \uac70\ubd81\uc774 \uc0d8\ud50c\uc744 \uc218\uc9d1\ud55c\ub2e4\uace0<\/span> <span style=\"color: #000000;\">\uac00\uc815\ud569\ub2c8\ub2e4<\/span> .<\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\ud45c\ubcf8 \ud06c\uae30 n = 40<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ud3c9\uade0 \uc0d8\ud50c \uc911\ub7c9 <span style=\"text-decoration: overline;\">x<\/span> = 300<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ud45c\ubcf8 \ud45c\uc900\ud3b8\ucc28 s = 18.5<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uac00\uc124\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub2e8\uc77c \ud45c\ubcf8 t-\uac80\uc815\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">H <sub>0<\/sub> : \u03bc = 310 (\uc778\uad6c \ud3c9\uade0\uc740 310\uad8c\uacfc \ub3d9\uc77c)<\/span><\/li>\n<li> <span style=\"color: #000000;\">H <sub>A<\/sub> : \u03bc \u2260 310 (\uc778\uad6c \ud3c9\uade0\uc740 310\ud30c\uc6b4\ub4dc\uc640 \ub3d9\uc77c\ud558\uc9c0 \uc54a\uc74c)<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\uba3c\uc800 \ud14c\uc2a4\ud2b8 \ud1b5\uacc4\ub7c9\uc744 \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">t = ( <span style=\"text-decoration: overline;\">x<\/span> \u2013 \u03bc) \/ (s\/ <span style=\"text-decoration: overline;\">\u221an<\/span> ) = (300-310) \/ (18.5\/ <span style=\"text-decoration: overline;\">\u221a40<\/span> ) = -3.4187<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c\uc73c\ub85c <strong>\uc790\uc720\ub3c4\ub97c \uacc4\uc0b0\ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">df = n -1 = 40 &#8211; 1 = 39<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub9c8\uc9c0\ub9c9\uc73c\ub85c \ud14c\uc2a4\ud2b8 \ud1b5\uacc4\uc640 \uc790\uc720\ub3c4\ub97c <a href=\"https:\/\/statorials.org\/ko\/t-\u110c\u1165\u11b7\u1109\u116e-p-\u1100\u1161\u11b9-\u1100\u1168\u1109\u1161\u11ab\u1100\u1175\/\" target=\"_blank\" rel=\"noopener\">P-\uac12 T-\uc810\uc218 \uacc4\uc0b0\uae30<\/a> \uc5d0 \uc5f0\uacb0\ud558\uc5ec p-\uac12\uc774 <strong>0.00149<\/strong> \uc784\uc744 \uc54c\uc544\ub0c5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774 p-\uac12\uc740 \uc720\uc758 \uc218\uc900 \u03b1 = 0.05\ubcf4\ub2e4 \ub0ae\uc73c\ubbc0\ub85c \uadc0\ubb34 \uac00\uc124\uc744 \uae30\uac01\ud569\ub2c8\ub2e4. \uc6b0\ub9ac\ub294 \uc774 \uac70\ubd81 \uc885\uc758 \ud3c9\uade0 \uccb4\uc911\uc774 310\ud30c\uc6b4\ub4dc\uac00 \uc544\ub2c8\ub77c\ub294 \ucda9\ubd84\ud55c \uc99d\uac70\ub97c \uac00\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>\uc608 2: 2-\ud45c\ubcf8 t-\uac80\uc815\uc758 \uc790\uc720\ub3c4<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">\uc11c\ub85c \ub2e4\ub978 \ub450 \uc885\uc758 \uac70\ubd81\uc774\uc758 \ud3c9\uade0 \ubb34\uac8c\uac00 \uac19\uc740\uc9c0 \uc5ec\ubd80\ub97c \uc54c\uace0 \uc2f6\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uc815\ubcf4\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac01 \uac1c\uccb4\uad70\uc5d0\uc11c \ubb34\uc791\uc704\ub85c \uac70\ubd81\uc774 \ud45c\ubcf8\uc744 \uc218\uc9d1\ud55c\ub2e4\uace0 \uac00\uc815\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>\uc0d8\ud50c 1:<\/strong><\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\ud45c\ubcf8 \ud06c\uae30 n <sub>1<\/sub> = 40<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ud3c9\uade0 \uc0d8\ud50c \uc911\ub7c9 <span style=\"text-decoration: overline;\">x<\/span> <sub>1<\/sub> = 300<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ud45c\ubcf8 \ud45c\uc900 \ud3b8\ucc28 s <sub>1<\/sub> = 18.5<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>\uc0d8\ud50c 2:<\/strong><\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\ud45c\ubcf8 \ud06c\uae30 n <sub>2<\/sub> = 38<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ud3c9\uade0 \uc0d8\ud50c \uc911\ub7c9 <span style=\"text-decoration: overline;\">x<\/span> <sub>2<\/sub> = 305<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ud45c\ubcf8 \ud45c\uc900 \ud3b8\ucc28 s <sub>2<\/sub> = 16.7<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uac00\uc815\uc744 \uc0ac\uc6a9\ud558\uc5ec 2-\ud45c\ubcf8 t-\uac80\uc815\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">H <sub>0<\/sub> : \u03bc <sub>1<\/sub> = \u03bc <sub>2<\/sub> (\ub450 \ubaa8\uc9d1\ub2e8 \ud3c9\uade0\uc774 \ub3d9\uc77c\ud568)<\/span><\/li>\n<li> <span style=\"color: #000000;\">H <sub>A<\/sub> : \u03bc <sub>1<\/sub> \u2260 \u03bc <sub>2<\/sub> (\ub450 \ubaa8\uc9d1\ub2e8 \ud3c9\uade0\uc774 \ub3d9\uc77c\ud558\uc9c0 \uc54a\uc74c)<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\uba3c\uc800 \ud569\ub3d9 \ud45c\uc900\ud3b8\ucc28 s <sub>p \ub97c<\/sub> \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">s <sub>p<\/sub> = \u221a <span style=\"border-top: 1px solid black;\">(n <sub>1<\/sub> -1)s <sub>1<\/sub> <sup>2<\/sup> + (n <sub>2<\/sub> -1)s <sub>2<\/sub> <sup>2<\/sup> \/ (n <sub>1<\/sub> +n <sub>2<\/sub> -2) = \u221a (<\/span> <span style=\"border-top: 1px solid black;\">40-1)18.5 <sup>2<\/sup> + (38-1) 16.7 <sup>2<\/sup> \/ (40+38-2)<\/span> = 17.647<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c\uc73c\ub85c <em>t<\/em> -test \ud1b5\uacc4\ub7c9\uc744 \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">t = ( <span style=\"border-top: 1px solid black;\">x<\/span> <sub>1<\/sub> \u2013 <span style=\"border-top: 1px solid black;\">x<\/span> <sub>2<\/sub> ) \/ s <sub>p<\/sub> (\u221a <span style=\"border-top: 1px solid black;\">1\/n <sub>1<\/sub> + 1\/n <sub>2<\/sub><\/span> ) = (300-305) \/ 17.647(\u221a <span style=\"border-top: 1px solid black;\">1\/40 + 1\/38<\/span> ) = -1.2508<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c\uc73c\ub85c <strong>\uc790\uc720\ub3c4\ub97c \uacc4\uc0b0\ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/strong><\/span><\/p>\n<p> <span style=\"color: #000000;\">df = <sub>n1<\/sub> + <sub>n2<\/sub> \u2013 2 = 40 + 38 \u2013 2 = 76<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub9c8\uc9c0\ub9c9\uc73c\ub85c \ud14c\uc2a4\ud2b8 \ud1b5\uacc4\uc640 \uc790\uc720\ub3c4\ub97c <a href=\"https:\/\/statorials.org\/ko\/t-\u110c\u1165\u11b7\u1109\u116e-p-\u1100\u1161\u11b9-\u1100\u1168\u1109\u1161\u11ab\u1100\u1175\/\" target=\"_blank\" rel=\"noopener\">P-\uac12 T-\uc810\uc218 \uacc4\uc0b0\uae30<\/a> \uc5d0 \uc5f0\uacb0\ud558\uc5ec p-\uac12\uc774 <strong>0.21484<\/strong> \ub77c\ub294 \uac83\uc744 \uc54c\uc544\ub0c5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774 p-\uac12\uc740 \uc720\uc758 \uc218\uc900 \u03b1 = 0.05\ubcf4\ub2e4 \ub0ae\uc9c0 \uc54a\uc73c\ubbc0\ub85c \uadc0\ubb34 \uac00\uc124\uc744 \uae30\uac01\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \uc774 \ub450 \uac1c\uccb4\uad70 \uc0ac\uc774\uc758 \uac70\ubd81\uc774 \ud3c9\uade0 \uccb4\uc911\uc774 \ub2e4\ub974\ub2e4\uace0 \ub9d0\ud560 \uc218 \uc788\ub294 \ucda9\ubd84\ud55c \uc99d\uac70\uac00 \uc5c6\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>\uc608 3: \uc30d\uc744 \uc774\ub8e8\ub294 \ud45c\ubcf8 t-\uac80\uc815\uc758 \uc790\uc720\ub3c4<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">\ud2b9\uc815 \ud6c8\ub828 \ud504\ub85c\uadf8\ub7a8\uc774 \ub300\ud559 \ub18d\uad6c \uc120\uc218\uc758 \ucd5c\ub300 \uc218\uc9c1 \uc810\ud504(\uc778\uce58)\ub97c \uc99d\uac00\uc2dc\ud0ac \uc218 \uc788\ub294\uc9c0 \uc5ec\ubd80\ub97c \uc54c\uace0 \uc2f6\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774\ub97c \ud14c\uc2a4\ud2b8\ud558\uae30 \uc704\ud574 \ub300\ud559 \ub18d\uad6c \uc120\uc218 20\uba85\uc758 <a href=\"https:\/\/statorials.org\/ko\/\u1109\u1162\u11b7\u1111\u1173\u11af\u1105\u1175\u11bc-\u1107\u1161\u11bc\u1107\u1165\u11b8\/\" target=\"_blank\" rel=\"noopener\">\ub2e8\uc21c \ubb34\uc791\uc704 \ud45c\ubcf8\uc744<\/a> \ubaa8\uc9d1\ud558\uace0 \uac01\uac01\uc758 \ucd5c\ub300 \uc218\uc9c1 \uc810\ud504\ub97c \uce21\uc815\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub7f0 \ub2e4\uc74c \uac01 \uc120\uc218\uc5d0\uac8c \ud55c \ub2ec \ub3d9\uc548 \ud6c8\ub828 \ud504\ub85c\uadf8\ub7a8\uc744 \uc0ac\uc6a9\ud558\uac8c \ud55c \ub2e4\uc74c \uc6d4\ub9d0\uc5d0 \ucd5c\ub300 \uc218\uc9c1 \uc810\ud504\ub97c \ub2e4\uc2dc \uce21\uc815\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-7956 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/jumelet1.png\" alt=\"\uc608 \uc30d\uccb4 T \uac80\uc815 \ub370\uc774\ud130 \uc138\ud2b8\" width=\"348\" height=\"443\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">\ud6c8\ub828 \ud504\ub85c\uadf8\ub7a8\uc774 \uc2e4\uc81c\ub85c \ucd5c\ub300 \uc218\uc9c1 \uc810\ud504\uc5d0 \uc601\ud5a5\uc744 \ubbf8\ucce4\ub294\uc9c0 \ud655\uc778\ud558\uae30 \uc704\ud574 \uc30d \uc0d8\ud50c t-\ud14c\uc2a4\ud2b8\ub97c \uc218\ud589\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uba3c\uc800 \ucc28\uc774\uc810\uc5d0 \ub300\ud574 \ub2e4\uc74c \uc694\uc57d \ub370\uc774\ud130\ub97c \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><span style=\"text-decoration: overline;\">x<\/span> <sub>diff<\/sub> : \ucc28\uc774\uc758 \ud45c\ubcf8 \ud3c9\uade0 = -0.95<\/span><\/li>\n<li> <span style=\"color: #000000;\">s: \ucc28\uc774\uc758 \ud45c\ubcf8 \ud45c\uc900 \ud3b8\ucc28 = 1.317<\/span><\/li>\n<li> <span style=\"color: #000000;\">n: \ud45c\ubcf8 \ud06c\uae30(\uc989, \uc30d \uc218) = 20<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uac00\uc815\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub300\uc751 \ud45c\ubcf8 t-\uac80\uc815\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">H <sub>0<\/sub> : \u03bc <sub>1<\/sub> = \u03bc <sub>2<\/sub> (\ub450 \ubaa8\uc9d1\ub2e8 \ud3c9\uade0\uc774 \ub3d9\uc77c\ud568)<\/span><\/li>\n<li> <span style=\"color: #000000;\">H <sub>A<\/sub> : \u03bc <sub>1<\/sub> \u2260 \u03bc <sub>2<\/sub> (\ub450 \ubaa8\uc9d1\ub2e8 \ud3c9\uade0\uc774 \ub3d9\uc77c\ud558\uc9c0 \uc54a\uc74c)<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c\uc73c\ub85c \ud14c\uc2a4\ud2b8 \ud1b5\uacc4\ub97c \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">t = <span style=\"text-decoration: overline;\">x<\/span> <sub>\ucc28\uc774<\/sub> \/ (s <sub>\ucc28\uc774<\/sub> \/\u221an) = -0.95 \/ (1.317\/\u221a20) = -3.226<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c\uc73c\ub85c <strong>\uc790\uc720\ub3c4\ub97c \uacc4\uc0b0\ud558\uaca0\uc2b5\ub2c8\ub2e4<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">df = n &#8211; 1 = 20 &#8211; 1 = 19<\/span><\/p>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/ko\/t-\u110c\u1165\u11b7\u1109\u116e-p-\u1100\u1161\u11b9-\u1100\u1168\u1109\u1161\u11ab\u1100\u1175\/\" target=\"_blank\" rel=\"noopener\">P \uac12 \uacc4\uc0b0\uae30\uc5d0 \ub300\ud55c T \uc810\uc218<\/a> \uc5d0 \ub530\ub974\uba74 t = -3.226 \ubc0f \uc790\uc720\ub3c4 = n-1 = 20-1 = 19\uc640 \uad00\ub828\ub41c p \uac12\uc740 <strong>0.00445<\/strong> \uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774 p-\uac12\uc740 \uc720\uc758 \uc218\uc900 \u03b1 = 0.05\ubcf4\ub2e4 \ub0ae\uc73c\ubbc0\ub85c \uadc0\ubb34 \uac00\uc124\uc744 \uae30\uac01\ud569\ub2c8\ub2e4. \ud6c8\ub828 \ud504\ub85c\uadf8\ub7a8\uc5d0 \ucc38\uc5ec\ud558\uae30 \uc804\uacfc \ud6c4\uc5d0 \uc120\uc218\ub4e4\uc758 \ud3c9\uade0 \ucd5c\ub300 \uc218\uc9c1 \uc810\ud504\uac00 \ub2e4\ub974\ub2e4\ub294 \uc99d\uac70\ub294 \ucda9\ubd84\ud569\ub2c8\ub2e4.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>\ucd94\uac00 \ub9ac\uc18c\uc2a4<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uacc4\uc0b0\uae30\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc81c\uacf5\ud55c \ub370\uc774\ud130\ub97c \uae30\ubc18\uc73c\ub85c t-\ud14c\uc2a4\ud2b8\ub97c \uc790\ub3d9\uc73c\ub85c \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/ko\/\u1109\u1162\u11b7\u1111\u1173\u11af-t-\u1110\u1166\u1109\u1173\u1110\u1173-\u1100\u1168\u1109\u1161\u11ab\u1100\u1175\/\" target=\"_blank\" rel=\"noopener\">t-\ud14c\uc2a4\ud2b8 \uacc4\uc0b0\uae30\uc758 \uc608<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/\u1110\u1161-\u1110\u1166\u1109\u1173\u1110\u1173-\u1100\u1168\u1109\u1161\u11ab\u1100\u1175-\u1103\u116e-\u1100\u1162\u110b\u1174-\u1109\u1162\u11b7\u1111\u1173\u11af\/\" target=\"_blank\" rel=\"noopener\">2-\ud45c\ubcf8 t-\uac80\uc815 \uacc4\uc0b0\uae30<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/\u110a\u1161\u11bc\u110b\u1173\u11af-\u110b\u1175\u1105\u116e\u1102\u1173\u11ab-\u1109\u1162\u11b7\u1111\u1173\u11af-t-\u1110\u1166\u1109\u1173\u1110\u1173-\u1100\u1168\u1109\u1161\u11ab\u1100\u1175\/\" target=\"_blank\" rel=\"noopener\">\uc30d\uccb4 \ud45c\ubcf8 t-\uac80\uc815 \uacc4\uc0b0\uae30<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ud1b5\uacc4\uc5d0\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub418\ub294 \uc138 \uac00\uc9c0 t-\uac80\uc815\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc77c\ud45c\ubcf8 t-\uac80\uc815 : \ubaa8\uc9d1\ub2e8 \ud3c9\uade0\uc744 \ud2b9\uc815 \uac12\uacfc \ube44\uad50\ud558\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. 2-\ud45c\ubcf8 t-\uac80\uc815 : \ub450 \ubaa8\uc9d1\ub2e8 \ud3c9\uade0\uc744 \ube44\uad50\ud558\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \ub300\uc751 \ud45c\ubcf8 t-\uac80\uc815 : \ud55c \ud45c\ubcf8\uc758 \uac01 \uad00\uce21\uce58\uac00 \ub2e4\ub978 \ud45c\ubcf8\uc758 \uad00\uce21\uce58\uc640 \uc5f0\uad00\ub420 \uc218 \uc788\ub294 \uacbd\uc6b0 \ub450 \ubaa8\uc9d1\ub2e8\uc758 \ud3c9\uade0\uc744 \ube44\uad50\ud558\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uac01 t-\uac80\uc815\uc744 \uc2e4\ud589\ud560 \ub54c \uac80\uc815 \ud1b5\uacc4\ub7c9\uacfc \ud574\ub2f9 \uc790\uc720\ub3c4\ub97c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-3769","post","type-post","status-publish","format-standard","hentry","category-20"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\ubaa8\ub4e0 T-\uac80\uc815\uc5d0 \ub300\ud55c \uc790\uc720\ub3c4\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95 - \ud1b5\uacc4\ud559<\/title>\n<meta name=\"description\" content=\"\uc774 \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 \ud1b5\uacc4\uc758 t-test\uc5d0 \ub300\ud55c \uc790\uc720\ub3c4\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \uc608\uc81c\uc640 \ud568\uaed8 \uc124\uba85\ud569\ub2c8\ub2e4.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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