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Quality management questions

1.If you have a double acceptance sampling plan where c1=1, r1=4, and r2=6, what is the probability you will accept the lot if the percent nonconforming in the population is 0.5%? Write out the equation for the combined probability of acceptance before you solve for anything.

2.Draw a control chart with the following out of control behaviors:

  1. A trend and cycling behavior
  2. A jump and two populations
  3. Two populations and cycling behavior
  4. A jump, a trend, and an obvious mistake

3.Your company has decided to use a p-chart to monitor the quality of their chicken nuggets. Data from the previous 15 batches is listed below.

  1. Calculate the central line, warning limits, and action limits for the chart.

b .How would you convert this data into a u-chart?

  1. How would this chart be used to determine where to use an Xbar and R chart pair?
Batch ## nuggets inspected# nonconforming
101711253
101721255
101731252
101741252
101751257
101761254
101771253
101781254
101791255
101801252
101811251
101821254
101831254
101841253
101851256

 

Last Updated on February 11, 2019

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