In a survey of 8451 us adults 314 percent said they were


Question: In a survey of 8451 U.S. adults, 31.4 percent said they were taking vitamin E as a supplement. The survey's margin of error is plus or minus 1 percent. Construct a confidence interval and estimate its level of confidence.

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Dissertation: In a survey of 8451 us adults 314 percent said they were
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