A process variable is best described as:
a. a picture of the activities that take place in a process
b. a graphical record of a process variable measured over time
c. an observable characteristic of a phenomenon that can be measured or classified.
d. a characteristic of a sample
Answer: C
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Find a 99% confidence interval for the difference in the mean strengths between threads treated for 60 seconds and those treated for 120 seconds.
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Fill in the blank(s) with correct word
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