A Cpk index of 1.00 equates to what defect rate?

The upper and lower specifications for a service are 10 min. and 8 min., respectively. The process average is 9 min. and the process capability ratio is 1.33. What is the process standard deviation?

ABC Company, produces meter sticks that have a target length of 100 centimeters with upper and lower specification limits of 100.05 and 99.95 centimeters respectively. Their existing process produces meter sticks with an average length of 100.00 centimeters and a standard deviation of 0.015 centimeters. What is their current process capability index?

A process is deemed “out of control” when

A delivery company defines a “defect” as a package delivered later than the promised delivery time. Management wants to monitor the proportion of packages delivered per week beyond the promised delivery time. Management is willing to sample 150 packages per week and determine which of these packages are “defects.”

A company wishes to monitor the variation in the length of time it takes to process and send a bill to a customer. Five bills will be randomly selected each day and the length of time it takes to process and send the bill to a customer will be recorded for each bill.

A precision parts manufacturer produces bolts for use in military aircraft. Ideally the bolts should be 37.50 centimeters (cm) in length. The specifications for length are 37.50 ± 0.25 cm. The company has established an -chart and an R-chart using samples of size five. The centerline for the -chart is equal to 37.65 cm and the centerline for the R-chart is equal to 1.03 cm.

What is the value of C_p for this process?

A precision parts manufacturer produces bolts for use in military aircraft. Ideally the bolts should be 37.50 centimeters (cm) in length. The specifications for length are 37.50 ± 0.25 cm. The company has established an -chart and an R-chart using samples of size five. The centerline for the -chart is equal to 37.65 cm and the centerline for the R-chart is equal to 1.03 cm.

What is the value of C_pk for this process?

Twenty-five samples, of size 30 were collected and a total of 48 nonconforming items were found. The three sigma upper control limit for a p-chart would be

Twenty samples of size 6 were collected for a variable measurement. Determine the upper control limit (UCL) and lower control limit (LCL) for an R-chart if the sum of the sample ranges equals 88.0.

An -chart is used to monitor the process _____.

The control chart most appropriate for data that represent the total number of deliveries that were delivered late each day is the

The control chart most appropriate for plotting the daily percentage of students that wait longer than 5 minutes in line at the undergraduate admissions office is

A 50-volt battery must be between 55 and 45 volts when it leaves the factory. Two hundred samples of batteries have yielded the following data: average charge of 49 volts with a standard deviation of 2.5 volts. What is the process capability?

The ________ chart is used in monitoring process dispersion.

An irregularity or problem with a larger unit is a(n) ________.

30) Which of the following is not used for monitoring defects or defectives?

Defectives are monitored using ________.

The producers of the Yugo automobile periodically inspect samples of 80 hoods for dents and scratches. A single flaw in a hood renders it unsuitable for installation in one of their fine automobiles. The results of the last 10 samples are shown.What are the lower and upper control limits for the np chart?

A parks and recreation worker counts the number of paint drips on each standard size park bench. The results from the last 10 benches are shown.

If the Parks Department decides to make a c chart, what should the lower and upper 3-sigma control limits be?

Ten samples of a process measuring the number of returns per 100 receipts were taken for a local retail store. The number of returns were 10, 9, 11, 7, 3, 12, 8, 4, 6, and 11. Find the standard deviation of the sampling distribution for the p-bar chart.

Jars of pickles are sampled and weighed. Sample measures are plotted on control charts. The ideal weight should be precisely 11 oz. Which type of chart(s) would you recommend?

If = 23 kg, σ = 0.4 ounces, and n = 16, what will be the ±3σ control limits for the x-bar chart?