Control chart for an unusual sampling situation. Invoices
Chapter , Problem 17.33(choose chapter or problem)
Control chart for an unusual sampling situation. Invoices are processed and paid by two clerks, one very experienced and the other newly hired. The experienced clerk processes invoices quickly. The new hire often refers to the procedures handbook and is much slower. Both are quite consistent, so that their times vary little from invoice to invoice. Suppose that each daily sample of four invoice-processing times comes from only one of the clerks. Thus, some samples are from one and some from the other clerk. Sketch the x chart pattern that will result.
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