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A machine is set to produce cylinders with a diameter of 5cm and a length of...

A machine is set to produce cylinders with a diameter of 5cm and a length of 30cm. We examine a sample of 40 cylinders and record their dimensions. We find that the average diameter is 5.33cm with a standard deviation of 1.1cm, and the average length is 29.7cm with a standard deviation of 1.32cm. Testing at the 10% level, what are the conclusions?

A. Only the diameter is on target

B. Both the diameter and the length are on target

C. Only the length is on target

D. Neither the diameter nor the length is on target

Math   Statistics-And-Probability   
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