According to an independent research, a point estimate of the proportion of U.S. consumers of black tea is p = 0.68. Calculate the sample size needed to be 95% confident that the error in estimating...

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Extracted text: According to an independent research, a point estimate of the proportion of U.S. consumers of black tea is p = 0.68. Calculate the sample size needed to be 95% confident that the error in estimating the true value of p is less than 0.015? Use the z-value rounded to two decimal places to obtain the answer. n =