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1. Suppose you are constructing either a mean chart with known variation or a p-chart to monitor some process.The process will only be stopped if a sample taken falls outside your control limits.If the process is in control, management wants only 12.6% of the samples taken to fall outside of your limits.(The company does not like stopping the process "accidentally.")What Z value should you use for your chart?
2. 1.531.963.02.751.15

1 points

Question 2

1. Which of the following is (are) true?
2. I.A production process that exhibits only random variability would be considered "out of control".
3. II. If a point plotted on a control chart falls outside one of the control limits, this suggests the production process is "out of control".
4. III.Assignable variation in a production process is completely random, and cannot be prevented.
5. II onlyIII onlyI onlyI and III and III

1 points

Question 3

1. Suppose you have three jobs waiting to be completed, and you must determine the sequence in which these jobs should be worked on.You calculated the critical ratio for each of the jobs and the results were that Job A has a critical ratio of 1.37, Job B has a critical ratio of -0.89, and Job C has a critical ratio of 0.05.Which of the following is true?
2. I.Job A should go first, according to the critical ratio rule.
3. II. Job A is already late.
4. III. Job C isn't late right now, but it will be late, no matter where you put it in the sequence.
5. II and IIII and III onlyI and IIIIII only

1 points

Question 4

1. A control chart for a bottled product requires that a sample consisting of a single bottle contain between 350 and 360 milliliters of product.Sample data, taken when the bottling process was in control, indicate that bottles contain an average of 355 milliliters, and you know that the bottling process has a standard deviation of4 milliliters when in control.Given that the bottling process is in control, what portion of its output will fall outside the limits of the chart?
2. 39.44%100%4.56%1.24%21.12%

1 points

Question 5

1. Jack, the owner of Jack's Electronic Repair, currently has five jobs that need to be scheduled:
3. PROCESSINGDUE
4. JOBTIME(hours)(hours)
5. ======================
6. A35
7. B11
8. C49
9. D23
10. E57
11. If Jack uses the earliest due date first (EDD) priority rule to schedule these jobs, what is the flowtime of job A?(When will job A be finished?)
12. 6 hours5 hours15 hours3 hours11 hours

1 points

Question 6

1. Jack, the owner of Jack's Electronic Repair, currently has five jobs that need to be scheduled:
3. PROCESSINGDUE
4. JOBTIME (hours)(hours)
5. ======================
6. A35
7. B11
8. C49
9. D23
10. E57
11. If Jack uses the shortest processing time first (SPT) priority rule to schedule these jobs, what will be the average job tardiness?
12. 2 hours2.4 hours3 hours2.33 hours2.2 hours