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Question
In a manufacturing process, a machine produces bolts that have an average length of 3 inches with a variance of .03. If we randomly select three bolts from this process, what is the probability the mean length of the bolt is at most 3.1 inches?A. 84.13%
B. 100%
C. 71.57%
D. 28.43%
E. 15.87%
Answer
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