Confidence interval on a ballot issue
What size sample will be needed to construct a 95% confidence interval on a ballot issue if the estimate must be ± 2% of the actual percent. This issue looks very close in the election.
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He measures the temperature at 36 various random locations, puts the data into a calculator and determines a mean of 65.3 and a standard deviation of 2.4 degrees. Construct a 95% confidence interval for the lake temperature.
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