ONE QUESTION, ONE STEP
ZX-9025A081F7Observational studies and experiments · 第 1 题
Observational studies and experiments · 原库模块 1 · Q1 原库参考解析
A sample of 40 fourth-grade students was selected at random from a certain school. The 40 students completed a survey about the morning announcements, and 32 thought the announcements were helpful. Which of the following is the largest population to which the results of the survey can be applied?
参考答案：
解题思路
容易忽略的一步
