Operations Management
11th Edition
ISBN: 9780133148787
Author: HEIZER
Publisher: PEARSON
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Question
Chapter 6.S, Problem 7P
a)
Summary Introduction
To calculate: The value of sample mean.
b)
Summary Introduction
To calculate: The average range of samples.
c)
Summary Introduction
To determine: The upper and lower control limits.
d)
Summary Introduction
To determine: The upper and lower control limits.
e)
Summary Introduction
To determine: The new upper and lower control limits.
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Instruction: Prepare a check sheet to analyze the data below from customer complaints, then prepare a list of recommendations that will address these complaints.
Case: Tip Top Markets
Tip Top Markets is a regional chain of supermarkets located in the southeastern United States. Karen Martin, manager of one of the stores, was disturbed by the large number of complaints from customers at her store, particularly on Tuesdays, so she obtained complaint records from the store’s customer service desk for the last nine Tuesdays.
June 1
out of orange yogurt
produce not fresh
bread stale
lemon yogurt past sell date
checkout lines too long
couldn’t find rice
overcharged
milk past sell date
double charged
stock clerk rude
meat smelled strange
cashier not friendly
charged for item not purchased
out of maple walnut ice cream
couldn’t find the sponges
something green in meat
meat tasted strange
didn’t like music
store too cold…
Consider the types of poor driving habits that mightoccur at a traffic light. Make a list of the 10 you consider mostlikely to happen. Add the category of “other” to that list.a) Compose a check sheet [like that in Figure 6.6 (a)] to collectthe frequency of occurrence of these habits. Using your checksheet, visit a busy traffic light intersection at four different
times of the day, with two of these times being during high-traffic periods (rush hour, lunch hour). For 15 to 20 minutes
each visit, observe the frequency with which the habits youlisted occurred.b) Construct a Pareto chart showing the relative frequency ofoccurrence of each habit.
As part of an insurance company's training program, participants learn how to conduct an analysis of clients' insurability. The goal is to have participants achieve a time in the range of 30 to 45 minutes. Test results for three participants were: Armand, a mean of 38 minutes and a standard deviation of 3 minutes: Jerry, a mean of 37 minutes and a standard deviation of 2.5 minutes: and Melissa, a mean of 37.5 minutes and a standard deviation of 1.8 minutes.
Which of the participants would you judge to be capable? Explain.
Can the value of the Cp exceed the value of Cp for a given participant? Explain
Chapter 6 Solutions
Operations Management
Ch. 6.S - Prob. 1DQCh. 6.S - Define in statistical control.Ch. 6.S - Prob. 3DQCh. 6.S - Prob. 4DQCh. 6.S - Prob. 5DQCh. 6.S - Prob. 6DQCh. 6.S - Prob. 7DQCh. 6.S - Prob. 8DQCh. 6.S - Prob. 9DQCh. 6.S - Prob. 10DQ
Ch. 6.S - Prob. 11DQCh. 6.S - Prob. 12DQCh. 6.S - Prob. 13DQCh. 6.S - Prob. 14DQCh. 6.S - Prob. 15DQCh. 6.S - Prob. 16DQCh. 6.S - Prob. 17DQCh. 6.S - What does the formula L = D2C mean?Ch. 6.S - Prob. 19DQCh. 6.S - An avant-garde clothing manufacturer runs a series...Ch. 6.S - Prob. 2PCh. 6.S - Prob. 3PCh. 6.S - Prob. 4PCh. 6.S - Kathleen McFaddens restaurant in Boston has...Ch. 6.S - Develop a flowchart [as in Figure 6.6 (e) and...Ch. 6.S - Prob. 7PCh. 6.S - Prob. 8PCh. 6.S - Prob. 9PCh. 6.S - Prob. 10PCh. 6.S - Prob. 11PCh. 6.S - Prob. 12PCh. 6.S - Prob. 13PCh. 6.S - Prob. 14PCh. 6.S - Prob. 15PCh. 6.S - Prob. 16PCh. 6.S - Prob. 17PCh. 6.S - Prob. 18PCh. 6.S - Prob. 19PCh. 6.S - Prob. 20PCh. 6.S - Prob. 21PCh. 6.S - Prob. 22PCh. 6.S - Prob. 23PCh. 6.S - Prob. 24PCh. 6.S - Prob. 25PCh. 6.S - Prob. 26PCh. 6.S - Prob. 27PCh. 6.S - Prob. 28PCh. 6.S - Prob. 29PCh. 6.S - Prob. 30PCh. 6.S - Prob. 31PCh. 6.S - Prob. 32PCh. 6.S - Prob. 33PCh. 6.S - Prob. 34PCh. 6.S - Prob. 35PCh. 6.S - Prob. 1CSCh. 6.S - Prob. 2CSCh. 6.S - Prob. 1.1VCCh. 6.S - Prob. 1.2VCCh. 6.S - Prob. 1.3VCCh. 6.S - Prob. 2.1VCCh. 6.S - Prob. 2.2VCCh. 6.S - Prob. 2.3VCCh. 6.S - Prob. 2.4VCCh. 6 - Prob. 1DQCh. 6 - Prob. 2DQCh. 6 - Prob. 3DQCh. 6 - Prob. 4DQCh. 6 - Prob. 5DQCh. 6 - Prob. 6DQCh. 6 - Prob. 7DQCh. 6 - Prob. 8DQCh. 6 - Prob. 9DQCh. 6 - Prob. 10DQCh. 6 - Prob. 11DQCh. 6 - Prob. 12DQCh. 6 - Prob. 13DQCh. 6 - Prob. 14DQCh. 6 - Prob. 15DQCh. 6 - Prob. 16DQCh. 6 - Prob. 17DQCh. 6 - What does the formula L = D2C mean?Ch. 6 - Prob. 19DQCh. 6 - An avant-garde clothing manufacturer runs a series...Ch. 6 - Prob. 2PCh. 6 - Prob. 3PCh. 6 - Prob. 4PCh. 6 - Kathleen McFaddens restaurant in Boston has...Ch. 6 - Develop a flowchart [as in Figure 6.6 (e) and...Ch. 6 - Prob. 7PCh. 6 - Prob. 8PCh. 6 - Prob. 9PCh. 6 - Prob. 10PCh. 6 - Prob. 11PCh. 6 - Prob. 12PCh. 6 - Prob. 13PCh. 6 - Prob. 14PCh. 6 - Prob. 15PCh. 6 - Prob. 16PCh. 6 - Prob. 17PCh. 6 - Prob. 1CSCh. 6 - How could the survey have been more useful?Ch. 6 - Prob. 3CSCh. 6 - Prob. 1.1VCCh. 6 - Prob. 1.2VCCh. 6 - Prob. 1.3VCCh. 6 - Prob. 1.4VCCh. 6 - Prob. 2.1VCCh. 6 - Prob. 2.2VCCh. 6 - Prob. 2.3VCCh. 6 - Prob. 2.4VCCh. 6 - Prob. 2.5VC
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- Boston Electric Generators has been getting manycomplaints from its major customer, Home Station, about thequality of its shipments of home generators. Daniel Shimshak,the plant manager, is alarmed that a customer is providing himwith the only information the company has on shipment quality.He decides to collect information on defective shipments througha form he has asked his drivers to complete on arrival at customers'stores. The forms for the first 279 shipments have been turnedin. They show the following over the past 8 weeks: Even though Daniel increased his capacity by adding more workersto his normal contingent of 30, he knew that for many weekshe exceeded his regular output of 30 shipments per week. Areview of his turnover over the past 8 weeks shows the following: a) Develop a scatter diagram using total number of shipmentsand…arrow_forwardQuality control in a factory pulls 40 parts with paint, packaging, or electronic defects from anassembly line. Of these, 28 had a paint defect, 17 had a packaging defect, 13 had an electronicdefect, 6 had both paint and packaging defects, 7 had both packaging and electronics defects, and 10had both paint and electronic defects. Did any part have all three types of defect? If so, how many?arrow_forwardAs part of an insurance company’s training program, participants learn how to conduct an analysis of clients’ insurability. The goal is to have participants achieve a time in the range of 30 to 45minutes. Test results for three participants were: Armand, a mean of 38 minutes and a standarddeviation of 3 minutes; Jerry, a mean of 37 minutes and a standard deviation of 2.5 minutes; andMelissa, a mean of 37.5 minutes and a standard deviation of 1.8 minutes.a. Which of the participants would you judge to be capable? Explain.b. Can the value of the Cpk exceed the value of Cp for a given participant? Explain.arrow_forward
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