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An environmentalist wants to find out the fraction of oil tankers that have spills each month. Step2of2: Suppose a sample of 438 tankers is drawn.

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

Step2of2:

Suppose a sample of 438 tankers is drawn. Of these ships, 311 did not have spills. Using the data, construct the 95% 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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