A random sample of items was selected from all items produced in a day of production.Each item was examined to determine if the item conformed to the customer's specifications.This was repeated over 20 days with a sample of 150 items chosen each day.At the end of the 20 days,it was determined that a total of 69 items failed and were declared to be nonconforming.The following chart,which shows the proportion of nonconforming items for each day,was produced. 
From the chart,what can be said about the process at this point?
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