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To estimate the proportion of traffic deaths in California last year that were alcohol related, determine the necessary sample size for the estimate to be
To estimate the proportion of traffic deaths in California last year that were alcohol related, determine the necessary sample size for the estimate to be accurate to within 0.06 with probability 0.90. Based on results of studies reported by the National Highway Traffic Safety Administration (www.nhtsa.gov), we expect the proportion to be about 0.30.
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