The 3-sigma limits for a process whose distribution conforms to the normal distribution includes _______ of the observed values, in the long run. Part 2 A. 99.74% B. 95.44% C. 68.26% D. 50%
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Part 2
Step by step
Solved in 3 steps
- The output from a process contains a 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?a. What is the cost to inspect each unit?b. What is the benefit (or loss) from the inspection process?A manufacturing process that is in control, reports Select one: a. Favorable variances offset by unfavorable variances. b. Mostly favorable variances c. All favorable variances. d. No variances.Suppose that a processoutput is normally distributed with a mean of 30.0 and a variance of 1.44. If the specifications are 30.0 /- 3.25, then compute process capability indices. Is the process capable of meeting specifications?
- What does X-bar stand for?a. The average of a sampleb. The unknown standard deviation in a process that we have to solve forc. A shady bar in West Philadelphiad. The maximum observed value in a sampleMr. Ferdinand is a well-known entrepreneur who sells fresh organic beef to persons in the localcommunity. Customers love the quality of meet that Mr. Ferdinand sells so they tend torecommend his product to other people. Recently, Mr. Ferdinand has been running out of beefto sell to his customers. One customer suggests to him that he must use past sales records toforecast demand for his beef so that he can meet his customers' demand.I. Using a numerical example, demonstrate to Mr. Ferdinand how he can use a three-week and a four-week weighted moving average to forecast demand for his beef.II. Show how Mr. Ferdinand can test the accuracy of his forecast. III. Explain to Mr. Ferdinand two ways in which he can benefit from doing a forecast for his beef.match each variable types with its description: variables: Process input variable, Process output variable, Critical to quality, Key process output variable, Key process intput variable, description (a) a product or process requirement that is no matter to the customer (b) a product or process knob or control that affects characteristics of importance to the customer (c) a product or process knob or control that has no impact on the process (d) a product or process requirement that must be present to make the customer happy but that the customer does not know to explicitly specify (e) a product or process requirement specifically requested by the customer
- Production. Consider again the task of the quality control inspectors in Exercise 22. a) In this context, what is meant by the power of the test the inspectors conduct? b) They are currently testing 5 items each hour. Someone has proposed that they test 10 instead. What are the advantages and disadvantages of such a change? c) Their test currently uses a 5% level of significance. What are the advantages and disadvantages of changing to an alpha level of 1%? d) Suppose that, as a day passes, one of the machines on the assembly line produces more and more items that are defective. How will this affect the power of the test? Exercise 22 Quality control. Production managers on an assembly line must monitor the output to be sure that the level of defective products remains small. They periodically inspect a random sample of the items produced. If they find a significant increase in the proportion of items that must be rejected, they will halt the assembly process until the…Compared to the area between z = 1.00 and z = 1.25, the area between z = 2.00 and z = 2.25 in the standard normal distribution will be: A- smaller B- larger C- the same D- impossible to compare without knowing μ and σPepsi makes bottles that need to be between 30 and 32 oz. You do measurements, and you find that a normal distribution describes Pepsi's actual bottling machine performance. Specifically, the mean of the process is 30.5 oz, and the process standard deviation is 0.02 oz. If Pepsi wants to be within the tolerances 99.7% of the time, what is the process capability index? Round your answer to the nearest 2nd decimal point. For example, if your answer is 0.4435, enter 0.44 into the box.
- If the process capability index (Cp) calculates to be 1.4 then you would conclude a.The process is not stable b.The process is stable c.The process is not capable d.The process is capable e.The process should be scrappedDirections: For each of the following situations: a. indentify the independent variable/s b. name the dependent variable; and c. give the two attributes of each variable A study on customer's satisfaction based on the quality of food offered in fast foods.For a particular process, the mean value, Xbar, is 1.011 and the mean range value, Rbar, is 0.102. If the product specification is 1.000 +/- 0.050, calculate the process capability for a sample size is 4. Question options: 0.194 0.237 0.297 0.397 0.549 0.624 0.734 0.929