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Questions on Conducting Polling:?
Imagine that you are conducting a poll to determine the percentage of adults who gamble at least once a month. As your sample size increases (let us say from 100 to 400 cases), which of the following becomes true?
A) Confidence interval becomes wider
B) Margin of error becomes smaller
C) Amount of sampling error increases
D) Margin of error increases
2 Answers
- .Lv 71 year ago
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- Anonymous1 year ago
Post in Math , not here
As the sample size increases, the standard deviation of the means decreases.
not A : Increasing the sample size decreases the width of confidence intervals, because it decreases the standard error.
B:
