What is the CPK?
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A manufacturing facility analyzes a lot-sample of 100 units out of a shipment of 10,000. The demodulator
frequency is supposed to be within 53.5 and 54.5 MHz. The mean is 54.25 MHz with a standard deviation of
0.04 MHz. What is the CPK?
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- 5. 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 K2. A beverage company would like to use a mean chart to monitor how much liquid beverage it puts into each 500-ml bottle. They know from experience that whenever this process is under control, bottle weight is normally distributed with a mean of 500 ml and a standard deviation of 2 ml. The company plans to measure samples of 30 bottles from the production lineevery hour and record the mean weight of liquid beverage in the bottles. If the company uses z = 3 as its standard for establishing the mean chart, where will the upper and lower control limits be on the chart? (Noteshaper: Scenario #28)Meena Chavan Corp.’s computer chip production process yields DRAM chips with an average life of 1,800hours and s = 100 hours. The tolerance upper and lowerspecification limits are 2,400 hours and 1,600 hours, respectively. Is this process capable of producing DRAM chips tospecification?
- Suppose you are analyzing processing times for a machining operation. In your analysis, you found C, = 2.1 and Cpk = 1.28. Given this information, which of the following sigma levels is the highest that you could claim your process is capable of meeting? O 1 sigma O 2 sigma 3 sigma O 4 sigma 5 sigma O 6 sigmaWhich of the following graphical presentations is not appropriate for numerical data? histogram pie chart time-series plot scatter plotYou are a food specialist in a company that specializes inrefrigerated delicacies, and one of your brands requires beingmaintained at a temperature of 5°C. You determine averagewater activity (aw) at this temperature to be 0.2. One day, you are informed that the cooling systems onone of the delivery trucks carrying your company’s productsmalfunctioned while en route to its destination and it would notbe fixed until the next delivery. The driver has informed you thatthe temperature in the delivery bay of the truck is averaging55°C. You estimate a heat of sorption (Q) of 19 kJ/mol. Calculate the water activity of the brand at this elevatedtemperature and comment on it’s integrity. Should the deliverystill push through? Or should the products be recalled anddisposed
- The process capability index (Cp) may mislead if: (I) the process is not stable. (II) the process output is not normally distributed. (III) the process is not centered.I think there is an error with a when multiplying 12 by 600Which one of the following methods eliminates short term and random fluctuations in a time series? a. Moving Average b. Semi-Average c. Neither moving average nor semi average d. Both moving average and semi-average
- Output from a process contains 0.02 defective unit. Defective units that go undetected into final assemblies cost $25 each to replace. An inspection process, which would detect and remove all defectives, can be established to test these units. However, the inspector, who can test 20 units per hour, is paid $8 per hour, including fringe benefits. Should an inspection station be established to test all units? Assume that the line will operate at the same rate (i.e., the current production rate) regardless of whether or not the inspection operation is added. a-1. Without the inspector, what is the current hourly cost of defects? a-2. Should an inspection station be established to test all units based on costs alone? multiple choice Yes No a-3. If the inspection operation is added, what would be the cost to inspect each unit? Note: Round your answer to 2 decimal places. b. What would be the benefit (or loss) from establishing the inspection process? Note: Round your answer…Suppose you are analyzing processing times for a machining operation. In your analysis, you found Cp = 2.1 and Cpk = 1.5. Given this information, which of the following sigma levels is the highest that you could claim your process is capable of meeting? 2 sigma 3 sigma 4 sigma 5 sigma 6 sigmaA scatter diagram is useful to determine if a relationship exists between two variables.TrueORFalse