【简答题】推断性统计的基本任务有两点:通过 、P来估计 μ ,π等,称为 ,能过P 1 ,P 2 来判定总体 π 1;, π 2 是否相等的问题,称为 。
【简答题】外力地质作用的主要表现有( )、( )搬运作用、沉积作用、成岩作用。
【判断题】The cost of insuring a diversified risky portfolio against a loss is almost lower than the cost of insuring against each risk separately.
【判断题】The cost of insuring a diversified portfolio of risks against a loss is almost more than the cost of insuring against each risk separately.
【单选题】如果想得到60g的面包,面团分割时应称重
【单选题】对濒死期循环衰竭临床表现的描述,错误的是
【判断题】微博推广人员可以使用微博来记录日常的流水账,信息有分享价值,有娱乐性即可。()