{"common":{"save":0,"post_id":"7599","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5752","post_id":"7599","mon_id":"1159285","chapter_id":"1159394","question":"<p>B\u1ea1n Chi r\u1ea5t th&iacute;ch nh\u1ea3y hi\u1ec7n \u0111\u1ea1i. Th\u1eddi gian t\u1eadp nh\u1ea3y m\u1ed7i ng&agrave;y&nbsp;trong th\u1eddi gian g\u1ea7n \u0111&acirc;y c\u1ee7a b\u1ea1n Chi \u0111\u01b0\u1ee3c th\u1ed1ng k&ecirc; l\u1ea1i \u1edf b\u1ea3ng sau:<\/p><p><span class=\"svgedit\"><svg height=\"185\" width=\"185\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g>&lt;title&gt;&lt;\/title><rect fill=\"#fff\" height=\"187\" id=\"canvas_background\" width=\"187\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g>&lt;title&gt;&lt;\/title><image height=\"186\" id=\"svg_1\" width=\"188\" x=\"-2\" 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y=\"-1\"><\/image> <\/g> <\/svg><\/span><\/p><p>Kho\u1ea3ng t\u1ee9 ph&acirc;n v\u1ecb&nbsp;c\u1ee7a m\u1eabu s\u1ed1 li\u1ec7u gh&eacute;p nh&oacute;m l&agrave;<\/p>","options":["<strong>A.<\/strong> 23,75","<strong>B.<\/strong> 27,5","<strong>C.<\/strong> 31,88","<strong>D.<\/strong> 8,125"],"correct":"4","level":"3","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>D.<\/strong> 8,125.<\/span><\/p><p>n = 18.<\/p><p>V&igrave;&nbsp;<span class=\"math-tex\">$\\dfrac{n}{4}=4,5$<\/span>&nbsp;v&agrave; 4,5 &lt; 6 n&ecirc;n nh&oacute;m ch\u1ee9a t\u1ee9 ph&acirc;n v\u1ecb th\u1ee9 nh\u1ea5t l&agrave; [20 ; 25).<\/p><p>Khi \u0111&oacute;&nbsp;<span class=\"math-tex\">$Q_1=20+\\dfrac{\\dfrac{18}{4}}{6}.(25-20)=23,75$<\/span>.<\/p><p>V&igrave;&nbsp;<span class=\"math-tex\">$\\dfrac{3n}{4}=13,5$<\/span>&nbsp;v&agrave; 6 + 6&nbsp;&lt; 13,5&nbsp;&lt; 6&nbsp;+ 6 + 4 n&ecirc;n nh&oacute;m ch\u1ee9a t\u1ee9 ph&acirc;n v\u1ecb th\u1ee9 ba l&agrave;&nbsp;[30 ; 35).<\/p><p>Khi \u0111&oacute;&nbsp;<span class=\"math-tex\">$Q_3=30+\\dfrac{\\dfrac{3.18}{4}-(6+6)}{4}.(35-30)=31,875$<\/span>.<\/p><p>Kho\u1ea3ng t\u1ee9 ph&acirc;n v\u1ecb l&agrave;&nbsp;<span class=\"math-tex\">$\\Delta_Q=Q_3-Q_1=31,875-23,75=8,125$<\/span>.<\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-09-10 03:00:59","option_type":"txt","len":0},{"id":"5753","post_id":"7599","mon_id":"1159285","chapter_id":"1159394","question":"<p>Kh\u1ea3o s&aacute;t s\u1ed1 ph\u1ea7n tr\u0103m c\u1ee7a tr\u1ebb s\u01a1 sinh c&oacute; tr\u1ecdng l\u01b0\u1ee3ng d\u01b0\u1edbi&nbsp;2500g c\u1ee7a m\u1ed9t s\u1ed1 t\u1ec9nh th&agrave;nh thu \u0111\u01b0\u1ee3c m\u1eabu s\u1ed1 li\u1ec7u gh&eacute;p nh&oacute;m nh\u01b0 sau:<\/p><p><span class=\"svgedit\"><svg height=\"165\" width=\"200\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g>&lt;title&gt;&lt;\/title><rect fill=\"#fff\" height=\"167\" id=\"canvas_background\" width=\"202\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g>&lt;title&gt;&lt;\/title><image height=\"167\" id=\"svg_1\" width=\"204\" x=\"-4\" xlink:href=\"data:image\/png;base64,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\" y=\"-1.5\"><\/image> <\/g> <\/svg><\/span><\/p><p>Nh&oacute;m ch\u1ee9a t\u1ee9 ph&acirc;n v\u1ecb th\u1ee9 ba l&agrave;<\/p>","options":["<strong>A.<\/strong> [5,5; 6,5)","<strong>B.<\/strong> [6,5; 7,5)","<strong>C.<\/strong> [7,5; 8,5)","<strong>D.<\/strong> [8,5; 9,5)"],"correct":"3","level":"3","hint":"<p>S\u1eed d\u1ee5ng \u0111\u1ecbnh ngh\u0129a t\u1ee9 ph&acirc;n v\u1ecb th\u1ee9 ba.<\/p>","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>C.<\/strong>&nbsp;[7,5; 8,5).<\/span><\/p><p>n = 43<\/p><p>V&igrave;&nbsp;<span class=\"math-tex\">$\\dfrac{3n}{4}=32,25$<\/span>&nbsp;v&agrave; 9 + 6 + 17 &lt; 32,35 &lt; 9 + 6 + 17 + 8 n&ecirc;n nh&oacute;m ch\u1ee9a t\u1ee9 ph&acirc;n v\u1ecb th\u1ee9 ba l&agrave; [7,5 ; 8,5).<\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-09-10 03:10:11","option_type":"txt","len":1},{"id":"5754","post_id":"7599","mon_id":"1159285","chapter_id":"1159394","question":"<p>Th\u1eddi gian (ph&uacute;t) truy c\u1eadp Internet m\u1ed7i bu\u1ed5i t\u1ed1i c\u1ee7a m\u1ed9t s\u1ed1&nbsp;h\u1ecdc sinh \u0111\u01b0\u1ee3c cho trong b\u1ea3ng sau:<\/p><p><span class=\"svgedit\"><svg height=\"185\" width=\"205\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g>&lt;title&gt;&lt;\/title><rect fill=\"#fff\" height=\"187\" id=\"canvas_background\" width=\"207\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g>&lt;title&gt;&lt;\/title><image height=\"186\" id=\"svg_1\" width=\"209\" x=\"-1.5\" 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\" y=\"-1\"><\/image> <\/g> <\/svg><\/span><\/p><p>Kho\u1ea3ng t\u1ee9 ph&acirc;n v\u1ecb c\u1ee7a m\u1eabu s\u1ed1 li\u1ec7u gh&eacute;p nh&oacute;m l&agrave;<\/p>","options":["<strong>A.<\/strong> 10,75","<strong>B.<\/strong> 4,75","<strong>C.<\/strong> 4,63","<strong>D.<\/strong> 4,38"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong> 4,75.<\/span><\/p><p>n = 56.<\/p><p>V&igrave;&nbsp;<span class=\"math-tex\">$\\dfrac{n}{4}=14$<\/span>&nbsp;v&agrave; 3 &lt; 14 &lt; 3 + 12&nbsp;n&ecirc;n nh&oacute;m ch\u1ee9a t\u1ee9 ph&acirc;n v\u1ecb th\u1ee9 nh\u1ea5t l&agrave; [12,5 ; 15,5).<\/p><p>Khi \u0111&oacute;&nbsp;<span class=\"math-tex\">$Q_1=12,5+\\dfrac{\\dfrac{56}{4}-3}{12}.(15,5-12,5)=15,25$<\/span>.<\/p><p>V&igrave;&nbsp;<span class=\"math-tex\">$\\dfrac{3n}{4}=42$<\/span>&nbsp;v&agrave; 3 + 12 + 15 &lt; 42 &lt; 3 + 12 + 15 + 24 n&ecirc;n nh&oacute;m ch\u1ee9a t\u1ee9 ph&acirc;n v\u1ecb th\u1ee9 ba l&agrave;&nbsp;[18,5 ; 21,5).<\/p><p>Khi \u0111&oacute;&nbsp;<span class=\"math-tex\">$Q_3=18,5+\\dfrac{\\dfrac{3.56}{4}-(3+12+15)}{24}.(21,5-18,5)=20$<\/span>.<\/p><p>Kho\u1ea3ng t\u1ee9 ph&acirc;n v\u1ecb l&agrave;&nbsp;<span class=\"math-tex\">$\\Delta_Q=Q_3-Q_1=20-15,25=4,75$<\/span>.<\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2024-09-11 00:47:27","option_type":"txt","len":0}]}