Xác suất thực nghiệm - Bài tập trung bình

Home Lớp 6 Toán lớp 6 - Sách kết nối tri thức Bài 43: Xác suất thực nghiệmBài tập trung bình

{"common":{"save":0,"post_id":"4703","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7577","post_id":"4703","mon_id":"1158113","chapter_id":"1158165","question":"Trong ngày l\u1ec5 h\u1ed9i t\u1ea1i \u0111\u1ecba ph\u01b0\u01a1ng, Lam có ch\u01a1i trò ch\u01a1i ném phi tiêu vào m\u1ed9t t\u1ea5m bìa có ghi các s\u1ed1 1 ; 5 ; 8. Lam ném 40 l\u1ea7n và ghi l\u1ea1i s\u1ed1 \u1edf ô mà phi tiêu trúng và \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 nh\u01b0 sau: 5 ; 1 ; 8 ; 5 ; 8 ; 8 ; 5 ; 1 ; 5 ; 8 ; 5 ; 8 ; 1 ; 1 ; 5 ; 8 ; 5 ; 8 ; 1 ; 5 ; 8 ; 5 ; 8 ; 5 ; 8 ; 1 ; 1 ; 5 ; 5 ; 1 ; 8 ; 8 ; 5 ; 1 ; 1 ; 8 ; 5 ; 8 ; 5 ; 1 .<\/p>Bi\u1ebft s\u1ef1 ki\u1ec7n "Phi tiêu trúng vào ô ghi s\u1ed1 n"  xu\u1ea5t hi\u1ec7n 14 l\u1ea7n. V\u1eady n = ?<\/p>","options":["n = 1","n = 5","n = 8"],"correct":"3","level":"2","hint":"\u0110\u1ebfm xem m\u1ed7i ô xu\u1ea5t hi\u1ec7n bao nhiêu l\u1ea7n \u0111\u1ec3 tìm ra ô s\u1ed1 m\u1ea5y xu\u1ea5t hi\u1ec7n 14 l\u1ea7n.<\/p>","answer":"S\u1ed1 l\u1ea7n phi tiêu ném trúng ô s\u1ed1 1 là  11 l\u1ea7n. S\u1ed1 l\u1ea7n phi tiêu ném trúng ô s\u1ed1 5 là  15 l\u1ea7n. S\u1ed1 l\u1ea7n phi tiêu ném trúng ô s\u1ed1<\/span> 8<\/span> là  14 l\u1ea7n<\/strong>.<\/p>V\u1eady n = 8<\/strong><\/span>.<\/p>\u0110áp án \u0111úng là  n = 8<\/span><\/strong> .<\/p>","type":"choose","extra_type":"shape2","time":"0","user_id":"131","test":"1","date":"2021-09-13 01:34:31","option_type":"txt","len":0},{"id":"7579","post_id":"4703","mon_id":"1158113","chapter_id":"1158165","question":"Na gieo m\u1ed9t con xúc x\u1eafc 200 l\u1ea7n và ghi l\u1ea1i s\u1ed1 ch\u1ea5m xu\u1ea5t hi\u1ec7n \u1edf m\u1ed7i l\u1ea7n gieo \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 nh\u01b0 sau:<\/p><table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"height: 100px; width: 180px;\"><tbody> <tr> <td>S\u1ed1 ch\u1ea5m<\/td> <td>S\u1ed1 l\u1ea7n<\/td> <\/tr> <tr> <td>1<\/td> <td>30<\/td> <\/tr> <tr> <td>2<\/td> <td>38<\/td> <\/tr> <tr> <td>3<\/td> <td>36<\/td> <\/tr> <tr> <td>4<\/td> <td>42<\/td> <\/tr> <tr> <td>5<\/td> <td>22<\/td> <\/tr> <tr> <td>6<\/td> <td>32<\/td> <\/tr><\/tbody><\/table>Tính xác su\u1ea5t th\u1ef1c nghi\u1ec7m c\u1ee7a s\u1ef1 ki\u1ec7n "S\u1ed1 ch\u1ea5m xu\u1ea5t hi\u1ec7n là s\u1ed1 l\u1ebb".<\/strong><\/p>","options":["$\\dfrac{11}{25}$<\/span>","$\\dfrac{12}{25}$<\/span>","$\\dfrac{13}{25}$<\/span>","$\\dfrac{14}{25}$<\/span>"],"correct":"1","level":"2","hint":"S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t l\u1ebb ch\u1ea5m = S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 1 ch\u1ea5m + s\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 3 ch\u1ea5m + s\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 5 ch\u1ea5m.<\/p>Xác su\u1ea5t th\u1ef1c nghi\u1ec7m c\u1ee7a s\u1ef1 ki\u1ec7n "S\u1ed1 ch\u1ea5m xu\u1ea5t hi\u1ec7n là s\u1ed1 l\u1ebb" = S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t l\u1ebb ch\u1ea5m<\/span>S\u1ed1 l\u1ea7n gieo con xúc s\u1eafc<\/span><\/span><\/p>","answer":"S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 1 ch\u1ea5m là 30 l\u1ea7n<\/p>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 3 ch\u1ea5m là 36 l\u1ea7n<\/p>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 5 ch\u1ea5m là 22 l\u1ea7n<\/p>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t l\u1ebb ch\u1ea5m là   30 + 36 + 22 = 88 l\u1ea7n<\/p>S\u1ed1 l\u1ea7n gieo con xúc s\u1eafc là  200 l\u1ea7n<\/p>Xác su\u1ea5t th\u1ef1c nghi\u1ec7m c\u1ee7a s\u1ef1 ki\u1ec7n "S\u1ed1 ch\u1ea5m xu\u1ea5t hi\u1ec7n là s\u1ed1 l\u1ebb" là  $\\dfrac{88}{200}$<\/span> = $\\dfrac{11}{25}$<\/span><\/span><\/p>\u0110áp án \u0111úng là  $\\dfrac{11}{25}$<\/span><\/span> .<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-09-13 01:58:10","option_type":"math","len":0},{"id":"7580","post_id":"4703","mon_id":"1158113","chapter_id":"1158165","question":"Na gieo m\u1ed9t con xúc x\u1eafc 200 l\u1ea7n và ghi l\u1ea1i s\u1ed1 ch\u1ea5m xu\u1ea5t hi\u1ec7n \u1edf m\u1ed7i l\u1ea7n gieo \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 nh\u01b0 sau:<\/p><table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"height: 100px; width: 180px;\"><tbody> <tr> <td>S\u1ed1 ch\u1ea5m<\/td> <td>S\u1ed1 l\u1ea7n<\/td> <\/tr> <tr> <td>1<\/td> <td>30<\/td> <\/tr> <tr> <td>2<\/td> <td>38<\/td> <\/tr> <tr> <td>3<\/td> <td>36<\/td> <\/tr> <tr> <td>4<\/td> <td>42<\/td> <\/tr> <tr> <td>5<\/td> <td>22<\/td> <\/tr> <tr> <td>6<\/td> <td>32<\/td> <\/tr><\/tbody><\/table>Tính xác su\u1ea5t th\u1ef1c nghi\u1ec7m c\u1ee7a s\u1ef1 ki\u1ec7n "S\u1ed1 ch\u1ea5m xu\u1ea5t hi\u1ec7n là s\u1ed1 ch\u1eb5n".<\/strong><\/p>","options":["$\\dfrac{14}{25}$<\/span>","$\\dfrac{13}{25}$<\/span>","$\\dfrac{12}{25}$<\/span>","$\\dfrac{11}{25}$<\/span>"],"correct":"1","level":"2","hint":"S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t ch\u1eb5n ch\u1ea5m = S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 2 ch\u1ea5m + s\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 4 ch\u1ea5m + s\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 6 ch\u1ea5m.<\/p>Xác su\u1ea5t th\u1ef1c nghi\u1ec7m c\u1ee7a s\u1ef1 ki\u1ec7n "S\u1ed1 ch\u1ea5m xu\u1ea5t hi\u1ec7n là s\u1ed1 ch\u1eb5n" = S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t ch\u1eb5n ch\u1ea5m<\/span>S\u1ed1 l\u1ea7n gieo con xúc s\u1eafc<\/span><\/span><\/p>","answer":"S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 2 ch\u1ea5m là 38 l\u1ea7n<\/p>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 4 ch\u1ea5m là 42 l\u1ea7n<\/p>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 6 ch\u1ea5m là 32 l\u1ea7n<\/p>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t ch\u1eb5n ch\u1ea5m là   38 + 42 + 32 = 112 l\u1ea7n<\/p>S\u1ed1 l\u1ea7n gieo con xúc s\u1eafc là  200 l\u1ea7n<\/p>Xác su\u1ea5t th\u1ef1c nghi\u1ec7m c\u1ee7a s\u1ef1 ki\u1ec7n "S\u1ed1 ch\u1ea5m xu\u1ea5t hi\u1ec7n là s\u1ed1 ch\u1eb5n" là  $\\dfrac{112}{200}$<\/span> = $\\dfrac{14}{25}$<\/span><\/span><\/p>\u0110áp án \u0111úng là  $\\dfrac{14}{25}$<\/span><\/span> .<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-09-13 01:59:58","option_type":"math","len":0}]}