Suppose that administrators of a large school district wish to estimate the proportion of children in the district enrolling in kindergarten who attended preschool. they took a simple random sample of children in the district who are enrolling in kindergarten. out of 60 children sampled, 39 had attended preschool. construct a plus four 95% z‑confidence interval for p. give the limits of the confidence interval as decimals, precise to at least three decimal places.