Work out each map scale as a map ratio
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Margin error of a sample mean is given by
where σ is the standard deviation,
is the critical value and n is the sample mean.
So beside the given standard deviation, we're supposed to know the sample size and critical value to answer this question.
where σ is the standard deviation,
So beside the given standard deviation, we're supposed to know the sample size and critical value to answer this question.