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发表于 2022-4-3 05:09:35
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At issue is the proportion of people in a particular county who do not have health care insurance coverage and an investigator wants to estimate it with 90% confidence. A preliminary sample of 230 people were asked if they have insurance coverage and 75 replied that they did not have coverage. What sample size would be needed to achieve a margin of error of .03?
Group of answer choices
428
528
938
There is not enough information to answer this question. |
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