What sample size is needed to give a margin of error within ±14 in estimating a population mean with 95% confidence, assuming a previous sample had s = 124. Round your answer up to the nearest integer. sample size =
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We need to use the formula for margin of error: Margin of error = z* (standard deviation / square root of sample size) where z* is the z-score for the desired level of confidence (95% in this case). Show more…
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