在抽样研究中,若口为定值,随着样本例数逐渐增大,则A.样本标准差减小B.当"趋近无穷 发布时间:2018-01-07 02:56 │ 来源:www.tikuol.com 题型:单项选择题 问题: 在抽样研究中,若口为定值,随着样本例数逐渐增大,则A.样本标准差减小B.当"趋近无穷大时,标准差降至0C.标准误减小D.标准误波动范围增大E.标准误、标准差都不改变
题型:单项选择题 将下列句子改为同义句,每空一词。1. To eat a balanced diet is very important. ________very important________eat a balanced diet. 2. They are watching TV at home now. They are watching TV at home________ ________ ________. 3. What's wrong with your sister? What's________ ________with your sister? 4. She has a sore throat. There is something________ ________her throat. 5. There is a lot of milk in the bottle. There is________ ________milk in the bottle. 查看答案
题型:单项选择题 登陆力量装载上船后,应视情组织海上会合编队,采取()和()相结合的方式实施海上航渡,并以执行海、空机动作战任务的主要兵力,在航渡海域建立多层、立体的护航屏障,以()与()的方式组织护航,确保海上航渡安全。 查看答案