In a combined study of northern pike, cutthroat trout, rainbow trout, and lake trout, it was found that 20 out of 851 fish died when caught and released using barbless hooks on flies or lures. All hooks were removed from the fish. What is the margin of error based on a 95% confidence interval?

David and alton are training for a race. they spend 35 minutes stretching and then go on a 5 mile practice run. david runs at a pace of 7 min/mile. alton runs at a pace of 8 min/mile. write an equation for each runner that shows the total length of their workout. then solve each equation showing your work