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An environmentalist wants to find out the fraction of oil tankers that have spills each month....

An environmentalist wants to find out the fraction of oil tankers that have spills each month. Step 2 of 2 : Suppose a sample of 281 281 tankers is drawn. Of these ships, 228 228 did not have spills. Using the data, construct the 90% 90 % confidence interval for the population proportion of oil tankers that have spills each month. Round your answers to three decimal places.

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