What was the sample proportion and what is the margin of error? 0.47 < p < 0.49 p̂ = margin of error=?
A confidence interval for a population proportion p has been given.
(This is Statistics, Proportion and Confidence Intervals)
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sample proportion would be the middle of the confidence interval
and the margin of error is the distance from the middle to one extreme
sample proporation = (0.47+0.49) / 2 = 0.48
Margin of errors = 0.49-0.48 = 0.01