This is a Proportion Problem. Is Starbucks coffee overpriced? The Minneapolis Star Tribune (Aug.12, 2008) reported that 73% of Americans say that Starbucks coffee is overpriced. The source of this information was a national telephone survey of 1000 American adults conducted by Rasmussen Reports. We will construct a 99% confidence interval. What is the Bound of Error (BOE) for a 99% Confidence Interval. Use 3 significant decimal places for your answer, and use the proper rules of rounding.