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A survey was given to a sample of residents in a certain town to determine the level of interest in creating a new park. Of those residents in the sample, 50 percent responded they were in favor of the park and 30 percent responded they were not in favor of the park. The remaining 20 percent of the sample did not respond to the survey.
Which of the following statements individually provide(s) sufficient additional information to determine the number of residents in the sample?
Indicate all such statements
A,C显示答案
· 相关考点
3.3.1 解一元一次方程与相关应用题
3.3.1 解一元一次方程与相关应用题
以上解析由 考满分老师提供。
