A local outdoor equipment store is being sold. The buyers are trying to estimate the percentage of items that are outdated . They will randomly sample among its 100,000 items in order to determine the proportion of merchandise that is outdated . The current owners have never determined their outdated percentage and can not help the buyers . Approximately how large a sample do the buyers need in order to insure that they are 98 % confident that the margin of error is within 3%