Principles Of Operations Management
11th Edition
ISBN: 9780135173930
Author: RENDER, Barry, HEIZER, Jay, Munson, Chuck
Publisher: Pearson,
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Chapter 10, Problem 31P
Summary Introduction
To determine: The
Introduction: Sample size is required to determine the number of observations that are necessary to find the true cycle time.
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QUESTION 6
A Taguchi loss determination:
A component has a target dimension value of 50 mm.
It is considered a complete loss of $23 if the deviation exceeds +/- 1.5 mm.
Determine the loss if a component measures 20.2 mm.
Round your answer to the nearest penny, if applicable.
QUESTION 7
A business process has the following parameters:
Process mean: 90
Upper Specification Limit 100
Lower Specification Limit 80
Process Standard Deviation: 3.25
Determine the process Capability Ratio Round your answer to 3 decimal places, if applicable.
Question 1
This Test: 60 pts possible
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Daily high temperatures in St. Louis for the last week were as follows: 92, 92, 94, 94, 95, 88, 95 (yesterday).
a) The high temperature for today using a 3-day moving average =
degrees (round your response to one decimal place).
b) The high temperature for today using a 2-day moving average =
degrees (round your response to one decimal place).
c) The mean absolute deviation based on a 2-day moving average = degrees (round your response to one decimal place).
%3D
d) The mean squared error for the 2-day moving average =
degrees (round your response to one decimal place).
e) The mean absolute percent error (MAPE) for the 2-day moving average = % (round your response to one decimal place).
13-2. (Pareto Chart & Fishbone Diagram). Smith, Schroeder, and Torn (SST) is a short-haul household furniture moving company. SST"s labor force, selected from the
local community college football team, is temporary and part-time. SST is concerned with recent complaints, as tabulated on the following tally sheet.
Complaint
Broken glass
Delivered to wrong address
Furniture rubbed together while on truck
Late delivery
Late arrival for pickup
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//
///// /////
Missing items
Nicks and scratches from rough handling /////
Soiled Upholstery
///// /////
Tally
///// /
///
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I
//
///// ///// ///// ///
a. Use a Pareto chart to identify the "few vital" complaint problems.
b. Use a cause-and-effect diagram to identify potential causes of the complaints
Chapter 10 Solutions
Principles Of Operations Management
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- QUESTION 2 South Africa Airways would like to monitor its airline's performance. Each week for the past 20 weeks, they checked each week a random sample of 100 flight arrivals for "one-time" performance. The table that follows contains the number of flights that did not meet South Africa Airways definition of "one time": Week Late flights 10 9 11 39103422822 10 11 12 13 14 15 16 17 18 19 20 19 2.1 Which control chart is appropriate to analyze the above data? Justify your answer. 2.2 Calculate the upper and lower control limits for this chart @ 99.73% confidence level. 2.3 Draw the chart and interpret it. (3) (10) (9) QUESTION 3 Two machines are currently in use in a process at a local manufacturing plant. The standards for this process are LSL 400 and USL .403. Machine One is currently producing with mean .401 and a standard deviation 0004. Machine Two is currently producing with mean = 4015 and a standard deviation = .0005. 3.1 Which of the…arrow_forward6arrow_forwardBank manager Art Hill wants to determine the percentageof time that tellers are working and idle. He decides touse work sampling, and his initia l estimate is that the tellers a reid le 15% of the time. How many observations should Hill take tobe 95.45% confident that the results wi ll not be more than ± 4%from the true result?arrow_forward
- QUESTION 18 Hank Kolb, the quality assurance manager is assessing the capability of a process that puts pressurized grease in an aerosol can. For the pressure of aerosol cans, the process mean is 78.24 and the process standard deviation is 1.38, and the upper and lower customer specifications are 82.50 and 77.50 respectively. Hank considers adjusting the process mean to improve its process capability. Then what is the maximum increase in Cpk he can achieve by adjusting the process mean? (Round to 2 decimal places)arrow_forwardClaudine Soosay recorded the following times assembling a watch: Observation No. 1 2 3 4 5 6 7 8 Performance rating is given as 95%. a) The average time of Claudine for the operation = Time (minutes) 0.11 0.09 0.11 0.09 0.15 0.10 0.09 0.10 Observation No. 9 10 11 12 13 14 15 16 minutes (round your response to three decimal places). Time (minutes) 0.11 0.09 0.11 0.10 0.11 0.12 0.14 0.10arrow_forwardQuestion 5 To move from a 3-Sigma process to a 6-Sigma process, the largest challenge is generally tc O Decrease the process output O Decrease the process variability O Increase the process variability O Increase the process inspectionsarrow_forward
- Questionnaire design and questions to be asked in thesis " Evaluating the anti-money laundering mechanism in the banking sector from a customer's perspective".arrow_forwardQuestion 8 A schematic technique to discover possible causes of quality problems in an overall process is a: O Check Sheet O Cause-and-Effect Diagram O Scatter Diagram O Flow Chart O Pareto Chartarrow_forwardWhat is the answer of this question ?arrow_forward
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