Are families with kids (population 1) just as likely than families without kids (population 2) to display holiday decorations? To answer the question, we would like to construct a 80% confidence interval using the following statistics. 20 of the 64 families with kids surveyed display holiday decorations and 39 of the 52 families without kids surveyed display holiday decorations. a. For this study, we use Select an answer b. The 80% confidence interval is (please show your answers to 3 decimal places)