From a population of 500 elements, a sample of 225 elements is selected. It is known that the variance of the population is 900. The standard error of the mean is approximately

发布于 2021-09-16 04:25:31

A.1.1022
B.2
C.30
D.1.4847

关注者

0

被浏览

83

芒果慕斯 2021-09-16

每件事情都必须有一个期限，否则，大多数人都会有多少时间就花掉多少时间。

此回答被采纳为最佳答案，开通VIP会员可查看

1 个回答

撰写答案

请登录后再发布答案，点击登录

关于作者

Violet_Ice紫冰

这家伙很懒，什么也没写！

提问

回答

1862

被采纳

1811

关注TA

发私信

相关问题

1

A.are established correctly

2

When a false null hypothesis is not rejected, the researcher has made a

3

钻孔灌注桩按其支承情况，有摩擦桩和（）两种。

4

In what type of test is the variable of interest the difference between the values of the observations rather than the observations themselves？

5

The test for the equality of two population variances is based on the

6

A sample of 400 observations will be taken from an infinite population. The population proportion equals 0.8. The probability that the sample proportion will be greater than 0.83 is

7

A weighted average of the value of a random variable, where the probability function provides weights is known as

8

（）适用于正循环钻机钻孔。

9

关于钻孔桩施工，下列说法正确的是（）。

10

桥梁一般采用（）承台，（）伸入承台，并有钢筋锚入承台。承台上再建（），形成完整的传力体系。

发布
问题

手机
浏览

扫码手机浏览

在线
客服