xofathiahmed12
06.05.2021 •
Mathematics
A Gallup Poll surveyed U.S. adults and found that 58% were in favor of phasing out the use of
plastic straws. If Gallup wanted to produce a 80% confidence interval and margin of error of 1%,
how much of a sample is needed?
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Ответ:
2dp: 0.00
1dp: 0.0
Significant figures, we start counting starting at the first non zero number
So we start counting at the 9, therefore:
2sf: 0.00097
3sf: 0.000965