Refer to Table S6.1-Factors for Computing Control Chart Limits (3 sigma) for this problem. Eagletrons are all-electric automobiles produced by Mogul Motors, Inc. One of the concerns of Mogul Motors is that the Eagletrons be capable of achieving appropriate maximum speeds. To monitor this, Mogul executives take samples of six Eagletrons at a time. For each sample, they determine the average maximum speed and the range of the maximum speeds within the sample. They repeat this with 35 samples to obtain 35 sample means and 35 ranges. They find that the average sample mean is 88.50 miles per hour, and the average range is 3.00 miles per hour. Using these results, the executives decide to establish an R-chart. They would like this chart to be established so that when it shows that the range of a sample is not within the control limits, there is only approximately a 0.0027 probability that this is due to natural variation. The control limits for the chart based on the above requirement for the given information are: UCL = 6.012 miles per hour (round the reponse to three decimal places). LCLR= miles per hour (round the reponse to three decimal places).

Refer to Table S6.1-Factors for Computing Control Chart Limits (3 sigma) for this problem. Eagletrons are all-electric automobiles produced by Mogul Motors, Inc. One of the concerns of Mogul Motors is that the Eagletrons be capable of achieving appropriate maximum speeds. To monitor this, Mogul executives take samples of six Eagletrons at a time. For each sample, they determine the average maximum speed and the range of the maximum speeds within the sample. They repeat this with 35 samples to obtain 35 sample means and 35 ranges. They find that the average sample mean is 88.50 miles per hour, and the average range is 3.00 miles per hour. Using these results, the executives decide to establish an R-chart. They would like this chart to be established so that when it shows that the range of a sample is not within the control limits, there is only approximately a 0.0027 probability that this is due to natural variation. The control limits for the chart based on the above requirement for the given information are: UCL = 6.012 miles per hour (round the reponse to three decimal places). LCLR= miles per hour (round the reponse to three decimal places).

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

See similar textbooks

Similar questions

Meena Chavan Corp.’s computer chip productionprocess yields DRAM chips with an average life of 1,800 hoursand s = 100 hours. The tolerance upper and lower specification limits are 2,400 hours and 1,600 hours, respectively. Is this pro-cess capable of producing DRAM chips to specification?
K- The Tyler Apiaries sells bees and beekeeping supplies Bees (including a queen) are shipped in special packages according to weight. target weight of a package is 1.2 kg. Historically, Tyler's shipments have weighed on average 1 2 kg, with a standard deviation of 0.07 kg a. The lower and upper tolerance limits are 1.1 kg and 1.3 kg, respectively The process capability ratio is 0476 (Enter your response rounded to three decimal places) capable of meeting the tolerance limits 99 7% of the time Tyler Apiaries
Design specifications require that a key dimension on a product measure 100 ± 10 units. A process being considered for producing this product has a standard deviation of four units. What can you say (quantitatively) regarding the process capability? Assume that the process is centered with respect to specifications. Note: Round your answer to 4 decimal places. Suppose the process average shifts to 92. Calculate the new process capability. Note: Round your answer to 4 decimal places. What is the probability of defective output after the process shift? Note: Use Excel's NORM.S.DIST function to find the correct probability. Round "z" values to 2 decimal places. Round your answer to 4 decimal places.
The following is an excerpt from a conversation between two sales clerks, Tracy Rawlin and Jeff Weimer. Both Tracy and Jeff are employed by Magnum Electronics, a locally owned and operated electronics retail store. Suggest appropriate control procedures that would have prevented or detected the theft of cash.
A fast food franchise tracked the number of errors that occurred in customers orders. These included; * wrong menu items *wrong size drink *lack of condiments *wrong price total *and so on... Some orders may have more than one error. In one week, 1500 orders were filled, and a total of 72 errors were discovered. Find the control limits for a C – Chart to monitor the number of errors per order. Is order accuracy, good or bad ? Explain.
a professor records the number of students who complains each week throughout the semester. if the class size is forty students, what are3 sigma control limits class? Construct a control chart and interpret the data.
. Inspection results of video-of-the-month shipments to customers for 25 consecutive days are given in the following table. What central line and control limits should be established and posted if it is assumed that any out of-control points have assignable causes? The number of inspections each day is constant and equals 1750. Date Nonconforming Date Nonconforming July 6 47 July 23 37 7 42 26 39 8 48 27 51 9 58 28 44 12 32 29 61 13 38 30 48 14 53 Aug 2 56 15 68 3 48 16 45 4 40 19 37 5 47 20 57 6 25 21 38 9 35 22 53
An airline company wishes to reduce the customer waiting time at the gates at a major airport using Taguchi Design of Experiments. The management decides to use Taguchi design of experiments for this project. Control Factors Level 1 Level 2 Assigned seating Yes (Y) No (N) Number of check-in bags allowed 1 2 Food and beverage supply on flight Beverage only (B) Food and Beverage (FB) Since there are 3 control factors with 2 levels in each, a total of 8 “runs” are possible. However, since performing the experiment with all possible runs is time-consuming, the management decides to consider only 4 runs. The noise factors are four different gates assigned to the airline. The experiment data is shown in the following table: Assigned Bags Food/Bev Gate 1 Gate 2 Gate 3 Gate 4 Y 1 B 31 27 29 32 Y 2 FB 46 40 38 35 N 1 FB 31 29 28 37 N 2 B 45 43 42 41 Make recommendations to the…
A scatter diagram is useful to determine if a relationship exists between two variables.TrueORFalse
Discuss briefly the difference between specification limits and control limits.
Fearless Inc. has designed and tested 400 Super Sucker Vacuum Cleaner models. All of them were operated for 1,000 hours at Lubbock's Fearless test facility. Out of all the vacuums 2 of them failed during the test. One of them after 900 hours and the other after 500 hours. What is this product estimated Mean Time Between Failures?
The specifications for a gasket that installs between two engine parts calls for a thickness of 6.0 mm ± .2 mm. The standard deviation of the process is estimated to be 0.05 mm. The process is known to operate at a mean thickness of 6.1 mm What are the upper and lower specification limits for the gasket? What are the Cp and Cpk values for this process? Is this process capable of producing the desired part?