- 在试验设计中,把要考虑的那些可以控制的条件称为因子,把因素变化的多个等级状态称为水平或处理。 ( )
- 费希尔信息量总是存在的 ( )
- 与标准正态分布相比,t分布的特点是( )
- 在单因子4水平的方差分析中, 检验的原假设是( )
- 总体均值的区间估计中,正确的是( )
- 设 .w65121255227s .brush0 { fill: rgb(255,255,255); } .w65121255227s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w65121255227s .font0 { font-size: 262px; font-family: "Times New Roman", serif; } .w65121255227s .font1 { font-size: 406px; font-family: "Times New Roman", serif; } .w65121255227s .font2 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w65121255227s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 4 3 2 1 , , , X X X X 是来自总体 .w65121255216s .brush0 { fill: rgb(255,255,255); } .w65121255216s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w65121255216s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w65121255216s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w65121255216s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ) 1 , 0 ( ~ N X 的一个简单随机样本,则统计量 .w65121255204s .brush0 { fill: rgb(255,255,255); } .w65121255204s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w65121255204s .pen1 { stroke: rgb(0,0,0); stroke-width: 16; stroke-linejoin: round; } .w65121255204s .font0 { font-size: 262px; font-family: "Times New Roman", serif; } .w65121255204s .font1 { font-style: italic; font-size: 406px; font-family: "Times New Roman", serif; } .w65121255204s .font2 { font-size: 373px; font-family: Symbol, serif; } .w65121255204s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2 4 2 3 2 2 2 1 X X X X + + 服从的分布是( )
- 设容量为16人的简单随机样本,平均完成工作所需时间为13分钟,总体服从正态分布且标准差为3,若想对完成工作所需时间构造一个90%的置信区间,则( )
- 单因素方差分析中, 因子有r个水平, 样本容量为n, 则F统计量的分子与分母的自由度各为( )
- 在假设检验中,一般情况下( )
- 方差分析使用的检验方法主要是( )
- 设 .w64542971433s .brush0 { fill: rgb(255,255,255); } .w64542971433s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64542971433s .font0 { font-weight: bold; font-size: 260px; font-family: "Times New Roman", serif; } .w64542971433s .font1 { font-weight: bold; font-size: 406px; font-family: "Times New Roman", serif; } .w64542971433s .font2 { font-style: italic; font-weight: bold; font-size: 260px; font-family: "Times New Roman", serif; } .w64542971433s .font3 { font-style: italic; font-weight: bold; font-size: 406px; font-family: "Times New Roman", serif; } .w64542971433s .font4 { font-weight: bold; font-size: 444px; font-family: "Euclid Extra", serif; } .w64542971433s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 1 ,, n XX K 是来自正态总体 .w64542971421s .brush0 { fill: rgb(255,255,255); } .w64542971421s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64542971421s .font0 { font-weight: bold; font-size: 260px; font-family: "Times New Roman", serif; } .w64542971421s .font1 { font-weight: bold; font-size: 406px; font-family: "Times New Roman", serif; } .w64542971421s .font2 { font-style: italic; font-weight: bold; font-size: 406px; font-family: "Times New Roman", serif; } .w64542971421s .font3 { font-style: italic; font-weight: bold; font-size: 373px; font-family: Symbol, serif; } .w64542971421s .font4 { font-weight: bold; font-size: 444px; font-family: "Euclid Extra", serif; } .w64542971421s .font5 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } 2 (,3) XN m : 的简单随机样本,则下列哪一项不是 .w64542971403s .brush0 { fill: rgb(255,255,255); } .w64542971403s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64542971403s .font0 { font-style: italic; font-weight: bold; font-size: 373px; font-family: Symbol, serif; } .w64542971403s .font1 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } m 的无偏估计( )
答案:对
答案:对
答案:错
答案:对
答案:错
答案:对
答案:错
答案:对
答案:对
答案:错
答案:
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