Find the indicated confidence interval. 18) Of 80 adults selected randomly from one town, 66 have health insurance. Find a 90% confidence interval for the true proportion of all adults in the town who have health insurance. A) From 0.742 to 0.908 B) From 0.716 to 0.934 C) From 0.726 to 0.924 D) From 0.755 to 0.895