17. Control Charting A large mail-order house has initiated a quality-control program. It randomly samples 100 of each day's orders and monitors whether or not the mail order-taking process is "under control" in the sense that errors in order taking are at minimum levels.

The number of orders per day is sufficiently large that one can assume that the sampling is done with replacement.

The daily error proportion prior to the initiation of this program has been 3.2 percent.