Trade​ associations, such as a dairy​ association, frequently conduct surveys to identify characteristics of their membership. If this organization conducted a survey to estimate the annual per capita consumption of milk and wanted to be 95​%confident that the estimate was no more than 0.65 gallon away from the actual​ average, what sample size is​ needed? Past data have indicated that the standard deviation of consumption is approximately 5 gallons.   The sample size required is nothing________ ​(Round up to the nearest whole​ number.)

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