Questions from Total Quality Management


Q: An injection molding machine at the Moby Molding Co. used to

An injection molding machine at the Moby Molding Co. used to make plastic bottles has four molding heads. The outside diameter of the bottle is an important measure of process performance. The C08 Pro...

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Q: Calculate the process capability statistics for the outside diameters of the bottles

Calculate the process capability statistics for the outside diameters of the bottles made on the injection molding machine at the Moby Molding Co. in Problem 36. Use the Process Capability Excel templ...

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Q: Chief Henry Batter of the Gotham City Police Department is trying to

Chief Henry Batter of the Gotham City Police Department is trying to reduce the time required to answer the phone at police headquarters (in fractions of a minute). The data are provided in the C08 Pr...

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Q: Charlie’s China Emporium sells a variety of imported items at a seaside

Charlie’s China Emporium sells a variety of imported items at a seaside resort. The store owner wants to monitor daily sales, which are provided for 75 days in the C08 Problem Data workbook. Use the X...

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Q: Boardwalk Electronics manufactures 300,000 circuit boards per month. A

Boardwalk Electronics manufactures 300,000 circuit boards per month. A random sample of 3,000 boards is inspected every week for five characteristics. During a recent week, three defects were found fo...

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Q: Thirty samples of 100 items each were inspected at the Rummy Candy

Thirty samples of 100 items each were inspected at the Rummy Candy Company and 150 items were found to be defective. Compute control limits for a p-chart for this process.

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Q: Samples of package orders were taken at the Altodiez Package Co.

Samples of package orders were taken at the Altodiez Package Co. to determine if the orders were prepared correctly. The number of orders with errors for each of 25 days are given in the C08 Problem D...

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Q: One hundred insurance claim forms are inspected daily at Full Life Insurance

One hundred insurance claim forms are inspected daily at Full Life Insurance Co. over 25 working days, and the number of forms with errors has been recorded as shown in the C08 Problem Data workbook....

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Q: The manager of a customer service call center is concerned that the

The manager of a customer service call center is concerned that the level of access of customers is decreasing due to heavier use. The proportion of peak period time when a customer is likely to quick...

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Q: Compute the control limits for an np-chart using the data

Compute the control limits for an np-chart using the data in Problem 42 for the Full Life Insurance Co. using the appropriate formulas. Then verify your calculations using the np-chart Excel template....

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