Suppose that out of a group of 10 coins, 9 of them are "fair" (i.e., they turn up heads 50% of the time). One of them is "unfair"-it gives tails only 35% of the time. Assume that each of the coins is thrown n times and the outcome is plotted on a p chart. Calculate the control limits and n so that the unfair coin will be caught 90% of the time, while the chance of rejecting a fair coin will be at most 1%.