What type of testing can determine internal defect and requires a couple material such as water of glycerine?
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Inspector errors can be categorized as which of the following?
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It is generally accepted that human inspectors only find about ______ of the defects actually present in the product.
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Calculate the standard deviation of the following population set of data: 30, 40, 37, 42, 40, 30 Response:

A control chart is used to control a paper towel line. End product is produced in rolls of varying length 12 inches wide. Nonconformities include tears, improper printing, improper perforations, etc. The control statistic is defects per 100 sheets with one roll constituting a sample.
Which control chart is most appropriate to use?
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