14 10 11 32 The postmaster of a small western town receives a certain number of complaints each day about mail delivery. 99 69 Number of complaints 1 2 4 10 3 14 4 8 5 DAY 7 75 82 6 10 11 12 13 12 13 7 24 16 Click here for the Excel Data File a. Determine three-sigma control limits using the above data. (Do not round intermediate calculations. Round your final answers to 3 decimal places. Leave no cells blank - be certain to enter "O" wherever required. Round up any negative control limit value to zero.) Answer is complete but not entirely correct. UCL LCL 16.175 0
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- Bill Kime's bowling ball factory makes bowling balls of adult size and weight only. The standard deviation in the weight of a bowling ball produced at the factory is known to be 0.39 pounds. Each day for 24 days, the average weight, in pounds, of 9 of the bowling balls produced that day has been assessed as follows Day 1 2 3 4 5 6 Average (lb) 9.9 9.9 10.1 10.1 99 99 Day 7 8 9 10 11 12 Average (lb) Day Average (b) 13 14 15 16 17 18 10.1 10.0 10.0 10.1 10.1 10.0 9.9 10.1 10.1 10.0 10.1 10.1 Day 19 20 21 22 23 24 Average (lb) 99 10.0 10.1 9.9 10.0 10.0 a) Establish a control chart for monitoring the average weights of the bowling balls in which the upper and lower control limits are each two standard deviations from the mean What are the values of the control limits? Upper Control Limit (UCL)=b (Round your response to two decimal places)S Book Hint Print eferences Problem 13-2 (Algo) A metal fabricator produces connecting rods with an outer diameter that has a 1 ± 0.02 inch specification. A machine operator takes several sample measurements over time and determines the sample mean outer diameter to be 1.004 inches with a standard deviation of 0.006 inch. Calculate the process capability index for this example. (Round your answer to 3 decimal places.) Process capability index5. Construct the frequency distribution for the data. For calculating the cell width assume 7 cells, the lower limit of 25.35 inches and upper limit of 25.42 inches. Round your answers for interval boundaries to three decimal places and round your answers for frequencies to the nearest whole number. Cell From To (inclusive) Frequency 09 25.360 X 1 7 2 3 456 10 a 8 9 10 10 K
- When a robot welder is functioning properly the cylinders it produces burst (on average) at 3400 psi, with known standard deviation 100 psi. Determine the 3-Sigma mean control chart limits. Test lot sample sizes are n=4 cylinders randomly selected from the production line. a. Centerline = ____ b. Upper Limit = ____ c. Lower Limit = ____ d. What is the probability that random variation will exceed the ± 3-sigma limits ____. (four decimal places with zero before the decimal)Telephone inquiries of 100 IRS “customers” aremonitored daily at random. Incidents of incorrect informationor other nonconformities (such as impoliteness to customers)are recorded. The data for last week follow:DAY NO. OF NONCONFORMITIES1 52 103 234 205 15 a) Construct a 3-standard deviation c -chart of nonconformities.b) What does the control chart tell you about the IRS telephoneoperators?Would a data series that contains values grouped into 10 categories be better displayed as a pie chart or a column chart? explain why
- ns Management || fall20 Random variation is also known as common cause variation. Select one: O a. TRUE O b. FALSEThe x-bar chart tests the change in the number of defective items in a given sample O a. TRUE O b. FALSE IS PAGE acer F2 F3 F4 F5 F6 F7 F8 Coca) F9 F10 F11 DIO 2$ 70 &Which items display the frequency of occurrence for count or categorical data?1 bar charts, histograms, dotplots2. box plots, histograms, dotplots3 Pareto charts, box plots, bar charts4 Pareto charts, bar chart
- calculate x-bar for the data shown, to two decimal places, 9,7.9,10,21.8,7COQ Histogram; Spreadsheet Application Genova Company classifies its costs of quality intofour categories. The costs of quality (COQ) as a percentage of cost of goods sold for the last threeyears are as follows:[LO 17-1, 17-5][LO 17-5]2019 2020 2021Prevention costs 1.00% 4.00% 2.00%Appraisal costs 3.00 2.50 1.50Internal failure costs 27.00 23.00 14.00External failure costs 31.00 18.00 12.00Required1. Use a spreadsheet to prepare a histogram that shows the costs of quality (COQ) trends as a percentageof cost of goods sold.2. Comment on the trends in cost of quality (COQ) over the 3-year period from 2019 to 2021.3. Based on the observed trends, what total cost of quality can the company expect in 2022? Explain.e Chrome quiz/attempt.php?attempt=1849384&cmid=845634&page=9 NG SYSTEM (ACADEMIC) tions Management Spring21 The x-bar chart tests the change in the number of defective items in a given sample O a. FALSE O b. TRUE AGE