You are investigating a new drug to lower cholesterol

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You are investigating a new drug to lower cholesterol. Digestive problems are a potential side effect. You separate 150 patients into two groups. Of the 78 patients receiving a placebo, 12 develop digestive problems. Of the 72 patients receiving the new drug, 15 develop digestive problems. Set up a 95% confidence interval for the proportion of patients receiving the placebo who developed digestive problems. Show all of your work in the dropbox. Put your final answer here. Express your answer as (lower bound, upper bound). Report your answer to two decimal places.