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Math·Problem-Solving and Data Analysis·Inference from sample statistics and margin of error
easy| Group | Percentage of students who speak a second language | Margin of error |
|---|---|---|
| 1 | 41% | 13% |
| 2 | 45% | 11% |
| 3 | 45% | 8% |
| 4 | 47% | 15% |
Four different research groups each surveyed a random sample of students from a certain high school to estimate the percentage of students at the school who speak a second language. The table shows the resulting estimates and their associated margins of error. Assuming the margins of error were calculated in the same way, which group had the largest sample size?
A
Group 4
B
Group 3
C
Group 2
D
Group 1