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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 10171 125 3 10172 125 5 10173 125 2 10174 125 2 10175 125 7 10176 125 4 10177 125 3 10178 125 4 10179 125 5 10180 125 2 10181 125 1 10182 125 4 10183 125 4 10184 125 3 10185 125 6

Last Updated on February 11, 2019

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