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Mathematics 13 Online
OpenStudy (anonymous):

Translate the excerpt below into a confidence interval for p and approximate the value of the level of confidence, c. In a survey of 8446 adults, 29.5% said they were taking Vitamin E as a supplement. The survey's margin of error is plus or minus 1% The confidence interval for proportion p is .285, .305 The interval is approximately a _% confidence interval. Round to one decimal.

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