OPERATIONS MANAGEMENT (LL)-W/ACCESS
17th Edition
ISBN: 9781260037821
Author: CACHON
Publisher: MCG
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Chapter 9, Problem 18CQ
Summary Introduction
To determine: The correct option.
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variation is a variation whose cause cannot be identified.
Select one:
O a. Theoretical
O b. Assignable
OC. Controllable
O d. Random
O e. Statistical
From the list below of the data being collected, identify which data would be appropriate for a P chart:
Select ALL correct answers.
Fluid ounces in a bottle of detergent
Temperature of the fryer oil at the Lay's potato chip plant
Number of articles with mistakes per every 100 sampled at a newspaper
Percentage of flights that were not on-time for an airline
Pizzas not made to order for a local pizzeria
Weight of a bag of chips.
Density of a golf ball
Percentage of patients that had a medication error during their hospital stay
What trade-offs are involved in each of these decisions?b. Choosing between a large sample size and a smaller sample size.
Chapter 9 Solutions
OPERATIONS MANAGEMENT (LL)-W/ACCESS
Ch. 9 - Prob. 1CQCh. 9 - Prob. 2CQCh. 9 - Prob. 3CQCh. 9 - Prob. 4CQCh. 9 - Prob. 5CQCh. 9 - Prob. 6CQCh. 9 - Prob. 7CQCh. 9 - Prob. 8CQCh. 9 - Prob. 9CQCh. 9 - Prob. 10CQ
Ch. 9 - Prob. 11CQCh. 9 - Prob. 12CQCh. 9 - Prob. 13CQCh. 9 - Prob. 14CQCh. 9 - Prob. 15CQCh. 9 - Prob. 16CQCh. 9 - Prob. 17CQCh. 9 - Prob. 18CQCh. 9 - Prob. 1PACh. 9 - Prob. 2PACh. 9 - Prob. 3PACh. 9 - Prob. 4PACh. 9 - Prob. 5PACh. 9 - Prob. 6PACh. 9 - Prob. 7PACh. 9 - Prob. 8PACh. 9 - Prob. 9PACh. 9 - Prob. 10PACh. 9 - Prob. 11PACh. 9 - Prob. 12PACh. 9 - Prob. 1CCh. 9 - Prob. 2C
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- In a p-chart, the upper control limit is how many estimated standard deviations abovethe average p-bar?a. 1b. 2c. 3d. 6arrow_forward1. Why are X-bar and R-Charts used together? Please Explain. 2. The principal focuses and methods of the pioneers of scientific management, what are they?(as represented by Henry Gantt, Frederick Taylor, Frank Gilbreth,etc.). In your words, how is the modern total quality management method different from the above?arrow_forwardAdministering new bank accounts is intended to average 15 minutes each. Five samples of four observations each have been taken. Use the sample data in concurrence with Table 2.3 to create upper and lower control limits for both a mean chart and a range chart. Do results propose that the procedure is in control? Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 11.2 11.3 10.7 10.9 10.8 10.9 10.8 10.9 11.3 11.2 10.8 10.9 10.9 11.1 11.3 11.1 11.4 11.1 11.5 10.7 Total: 44 44.4 43.6 44.8 44arrow_forward
- Q6 - A department store manager has monitored the number of complaints received per week about poor service. The probabilities for numbers of complaints in a week, established by this review, are shown in the table. Number of complaints 0 1 2 3 4 5Probability 0.17 0.30 0.33 0.07 0.05 0.08 What is the mean of complaints received per week? Please round your answer to the nearest hundredth.arrow_forwardHouston 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 providing tasty, inviting patient meals that are also healthful. A questionnaire accompanies each meal served, asking the patient, among other things, whether he or she is satisfied or unsatisfied with the meal. A 50-patient sample of the survey results over the past 7 days yielded the following data: Day No. of Unsatisfied Patients Sample Size 1 26 50 2 20 50 3 10 50 4 15 50 5 12 50 6 26 50 7 15 50 The control limits to include 99.73% of the random variation in meal satisfaction are: UCLp= (enter your response as a number between 0 and 1, rounded to three decimal places). LCLp = (enter your response as a number between 0 and 1, rounded to three decimal places).…arrow_forwardThe overall average on a process you are attempting to monitor is 50 units. The process population standarddeviation is 1.72. Determine the upper and lower controllimits for a mean chart, if you choose to use a sample sizeof 5.a) Set z = 3.b) Now set z = 2. How do the control limits change?arrow_forward
- Twenty sets of four measurements of the diameters in inches of Hot Shot golf balls were (given 12.69) a. Enter the data into a spreadsheet and compute the means and the ranges for each sample.b. Using the results of part (a), develop X- and R charts similar to Figures 12–7 and 12–8. Assume three-sigma limits for the X- chart.c. Develop a histogram based on the 80 observations. Assume class intervals (1) 1.80–1.849, (2) 1.85–1.899, (3) 1.90–1.949, (4) 1.95–1.999, (5) 2.0–2.049, (6) 2.05–2.099, (7) 2.10–2.149, (8) 2.15–2.20. Based on your histogram, what distribution might accurately describe the diameter of a golf ball selected at random?arrow_forwardThe time to replace vehicle wiper blades at a service center was monitored using a mean and a rangechart. Six samples of n = 20 observations were obtained and the sample means and ranges computed:Sample Mean Range Sample Mean Range1 3.06 .42 4 3.13 .462 3.15 .50 5 3.06 .463 3.11 .41 6 3.09 .45 a. Using the factors in Table 10.3, determine upper and lower limits for mean and range charts.b. Is the process in control?arrow_forwardMary Beth Marrs, the manager of an apartmentcomplex, feels overwhelmed by the number of complaints sheis receiving. Below is the check sheet she has kept for the past12 weeks. Develop a Pareto chart using this information. Whatrecommendations would you make?arrow_forward
- Can you please explain the steps to create the control chart ?arrow_forwardSix samples of five observations each have been taken for a process. The sample means and ranges computed (in minutes) are, (mean, range): (3.55, 0.76), (4.03, 0.7), (3.72, 0.41), (3.74, 0.48), (4.09, 0.76), and (3.74, 0.62). Compute the upper control limit a. 4.11 b. 4.172 c. 2.451 d. 2.832arrow_forwardA shift in the process mean for a measured variable would be best detected by a Select one: O a.s chart O b. p chart OC. R chart O d. c chart e. x barchartarrow_forward
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