皮皮学，免费搜题
登录
搜题
【单选题】
在重复的简单随机抽样中，当概率保证程度从68.27%提高到95.45%时，必要的样本量将会（）。A.
增加一倍
B.
增加两倍
C.
增加三倍
D.
增加四倍
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】下列有关套期保值方式的说法正确有（ ）。
【简答题】同义句转换。 1. He didn't take part in the sports meeting because he was ill. He didn't take part in the sports meeting ______ ______ his illness. 2. She said she was an artist, but actually she was a liar....
【简答题】They played an important role (part) in winning thematch. 译:______________________________2. He1. They played an important role (part) in winning thematch. 译:______________________________ 2. He playe...
【简答题】Part B Explain the importance of water to life, including the following points: Outline 1. Water is essential for life. 2. Water is an important part of body structure. 3. A healthy body needs water t...
【简答题】编写一个学生成绩转换程序,用户输入百分制的学生成绩,成绩大于或等于90且小于或等于100的输出为字符“A”,成绩大于或等于80且小于90的输出为字符“B”,成绩大于或等于70且小于80的输出为字符“C”,成绩大于或等于60且小于70的输出为字符“D”,成绩小于60的输出为字符“E”。 如果输入的成绩值不在0~100之间,则输出"输入数据有误!"。
相关题目：
参考解析：
知识点：
题目纠错 0
发布
