Determine the necessary sample size. A market researcher wishes to estimate the proportion of U.S. consumers who started their Christmas shopping before Thanksgiving. What is the smallest number of U.S. consumers that should be surveyed in order to be 99% confident that the true proportion is estimated to within 3%? (Hint: use a 'worst case scenario' of p=0.50) 1844 1714 1068 461 1503

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