In 2019 (before the pandemic), 18.5% of adults reported symptoms of depression. One year later, in survey of 500 randomly selected adults, 112 reported symptoms of depression. Did the proportion of adults with depression increase? a) Calculate a confidence interval to estimate the proportion of adults with depression in the population – SHOW STEPS! b) Based on your result, how would you answer the original question? Give reasoning. c) Interpret the confidence interval in words.

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