Multiple Choice
A new machine is set or calibrated to fill tubes of toothpaste at precisely 6.75 ounces. Then, once the machine is running, a sample of 6 tubes is taken every three hours and weighed with the following results: 
What is the upper control limit (UCL) for the mean?
A) 6.738
B) 6.999
C) 6.777
D) 7.221
Correct Answer:
Verified
Correct Answer:
Verified
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