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A New York Times article reported that a survey conducted in 2014 included 36,000 adults, with 3.71% of them being regular users of e-cigarettes. Because
A New York Times article reported that a survey conducted in 2014 included
36,000 adults, with 3.71% of them being regular users of e-cigarettes. Because e-cigarette use is relatively new, there is a need to obtain today's usage rate. How many adults must be surveyed now if a confidence level of 90% and a margin of error of 2 percentage points are wanted? Complete parts (a) through (c) below.
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