The 95% confidence interval of the sample mean of employee age for a major corporation is 19 years to 44 years based on a z-statistic. The population of employees is more than 5,000 and the sample size of this test is 100. Assuming the population is normally distributed, the standard error of mean employee age is closet to:

[单选题]The mean age of all CFA candidates is 28 years. The mean age of a random sa

[单选题]When constructing a confidence interval for the population mean of a nonnor

[单选题]In setting the confidence interval for the population mean of a normal or a

[单选题]In setting the confidence interval for the population mean of a normal or a

[单选题]Use the following values from a student's t-distribution to establish a 95%

[单选题]Use the following values from Student's t-distribution to establish a 95% c

[单选题]设有员工实体Employee(employeeID,name,sex,age,tel,department)，其中employeeID为员工号，name为员工姓名，sex为员工性别，age为员工年龄，tel为员工电话(要求记录该员工的手机号码和办公室电话)，departID为员工所在部门号(要求参照另一部门实体Department的主码departID)。E．mployee实体中存在的派生属性及其原因是(51)；对Employee实体中属性departmentID的约束是(52)。A．name，

[单选题]设有员工实体Employee(employeeID，name，sex，age，tel，departID)，其中employeeID为员工号，name为员工姓名，sex为员工性别，age为员工年龄，tel为员工电话，记录该员工的手机号码、办公室电话等，departID为员工所在部门号，参照另一部门实体 Department的主码departID。Employee实体中存在派生属性(40)；Employee实体中还存在多值属性(41)；对属性departID的约束是(42)。A．name，原因是会存

[单选题,共用题干题] 设有员工实体Employee（employeeID，name，sex，age，tel，departID），其中employeeID为员工号，name为员工姓名，sex为员工性别，age为员工年龄，tel为员工电话，记录该员工的手机号码、办公室电话等，departID为员工所在部门号，参照另一部门实体Department的主码departID。Employee实体中存在派生属性（1）。Employee实体中还存在多值属性（2）。对属性departID的约束是（3）。空白（1）处应选择

[单选题]To apply the central limit theorem to the sampling distribution of the samp