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The sample of 200 middle schoolers found that 20% of them had tried recreational drugs at least once. Find the 90% confidence interval of the

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The sample of 200 middle schoolers found that 20% of them had tried recreational drugs at least once. Find the 90% confidence interval of the true proportion of middle schoolers who have tried recreational drugs at least once. What is the lower limit? Show your work on your paper to turn in. Round to 3 decimal places and type your answer as a percent. You will need to use the confidence interval formula for proportions. Express your answer as a percent

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