国开在线答案
- 2024-03-05 [判断] 已知总体,从中抽取一组样本测得数据5.04.85.15.25.0在显著水平α=0.1下可以认为μ=5.0。data:image/png;base64,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
- 2024-03-05 [判断] 某种产品按规定次品率不超过4%才能出厂,今从一批产品中抽查10件,发现有4件次品,这是小概率事件,这批产品可以正常出厂。
- 2024-03-05 [判断] 数理统计面对的是随机现象,面对的研究对象总体并不完全了解,如期望μ未知,若要确定未知参数μ,解决的方法主要有三个:(1)点估计法:用样本的均值作为总体的均值的估计值;(2)区间估计法:未知参数落在置信区间内的概率是α;(3)假设检验:回答数学期望是不是等于μ0的问题.
- 2024-03-05 [单选] 对正态总体方差的假设检验用的是().
- 2024-03-05 [单选] ()的优点是结构层次短、蜘蛛效率高、URL短,对搜索引擎而言最为理想;缺点是URL语义不明显,随着数据量的增加会使网站变得难以组织,内部链接不好做,权重传递难以集中,查找和维护起来非常麻烦。
- 2024-03-05 [单选] 网站的()也称作链接结构,主要是指由网页内部链接所形成的逻辑结构。
- 2024-03-05 [单选] 网站()是一个网站的入口网页,作用是引导用户浏览网站其他部分的内容。
- 2024-03-05 [单选] 网站Logo,登录条、页面横幅广告、菜单栏等内容都一般放在网页的()。
- 2024-03-05 [多选] 网页设计软件主要有:
- 2024-03-05 [多选] 网页构成要素包括: