Questions from General Operations Management


Q: The defect rate for data entry of insurance claims at Sadegh Kazemi

The defect rate for data entry of insurance claims at Sadegh Kazemi Insurance Co. has historically been about 1.5%. a) What are the upper and lower control chart limits if you wish to use a sample siz...

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Q: Orlando’s Arnold Palmer Hospital, founded in 1989, specializes in treatment

Orlando’s Arnold Palmer Hospital, founded in 1989, specializes in treatment of women and children and is renowned for its high-quality rankings (top 10% of 2,000 benchmarked hospitals), its labour and...

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Q: You are attempting to develop a quality monitoring system for some parts

You are attempting to develop a quality monitoring system for some parts purchased from Charles Sox Manufacturing Co. These parts are either good or defective. You have decided to take a sample of 100...

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Q: The results of an inspection of DNA samples taken over the past

The results of an inspection of DNA samples taken over the past 10 days are given below. Sample size is 100. a) Construct a 3-sigma p-chart using this information. b) Using the control chart in part (...

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Q: In the past, the defective rate for your product has been

In the past, the defective rate for your product has been 1.5%. What are the upper and lower control chart limits if you wish to use a sample size of 500 and z = 3?

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Q: Refer to Problem S6.16. If the defective rate was

Refer to Problem S6.16. If the defective rate was 3.5% instead of 1.5%, what would be the control limits (z = 3)? Data from Problem S6.16: In the past, the defective rate for your product has been 1....

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Q: Five data entry operators work at the data processing department of the

Five data entry operators work at the data processing department of the Birmingham Bank. Each day for 30 days, the number of defective records in a sample of 250 records typed by these operators has b...

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Q: Houston North Hospital is trying to improve its image by providing a

Houston North Hospital is trying to improve its image by providing a positive experience for its patients and their relatives. Part of the “image” program involves...

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Q: The overall average on a process you are attempting to monitor is

The overall average on a process you are attempting to monitor is 50 units. The process population standard deviation is 1.72. Determine the upper and lower control limits for a mean chart, if you cho...

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Q: Jamison Kovach Supply Company manufactures paper clips and other office products.

Jamison Kovach Supply Company manufactures paper clips and other office products. Although inexpensive, paper clips have provided the firm with a high margin of profitability. Sample size is 200. Resu...

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