Question: Assume that a sample is used to estimate a population proportion p . Find the 80% confidence interval for a sample of size 267 with

Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval for a sample of size 267 with 83.9% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. 80% C.I. = Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.

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