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bài tập xác suất thống kê 2
Iåm tắp naƵƠcd ;Iåm 0: ĕmỀu tr` trêc oờt oẢu dỞo >7 cdƵởm ucd taƵ tuyẼc Ềc fmỄt nþ km nĎc, ca ĐƵỮn aåo fƵỮcdU^@ [Urlst`tg pgnmhn @cdgc] trucd iæca få 07 [cd/of] vå Đờ fỄna nauậc oẢu få 0,7 [cd/of]. XỒm Đờc nắy =7%, aîy ƵỒn fƵỮcd nal aåo fƵỮcd U@ trucd iæca nỤ` cdƵởm ucd taƵ tuyẼc Ềc fmỄt trlcdkéc sỐ. DmẮ sữ aåo fƵỮcd U^@ nỤ` cdƵởm ucd taƵ tuyẼc Ềc fmỄt tuéc tagl paéc paỐm nauậc.[rẮ fởm:Dỏm Q få aåo fƵỮcd U^@ nỤ` cdƵởm ucd taƵ tuyẼc Ềc fmỄt trlcd kéc sỐ.
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