英语翻译
问题描述：
英语翻译
The sampling error for this study is plus or minus1.5 percent for questions asked of everyone in the sample and plus or minus 2.5 percent for information collected only form those who have had prior Internet access.
答
本研究的对接受访问的所有人的样本而言,抽样误差是正负1.5个百分点,但只计算对之前有网路接触的人的资料而言,误差是正负2.5个百分点