Using the data from problem 4, answer the following questions:
A) If he sets an upper control limit of 42 and a lower control limit of 38 around the target value of 40 calls, what is the probability of concluding that a technician is over- or under-performing when he or she is not?
B) Establish the control limits for the range chart. What does this chart tell you about the performance of the technicians?

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The Answer of Using the data from problem 4, answer the following questions:
A) If he sets an upper control limit of 42 and a lower control limit of 38 around the target value of 40 calls, what is the probability of concluding that a technician is over- or under-performing when he or she is not?
B) Establish the control limits for the range chart. What does this chart tell you about the performance of the technicians?

Using the Data from Problem 4, Answer the Following Questions