Multiple Choice
In a manufacturing process a random sample of 36 bolts manufactured has a mean length of 3cm with a standard deviation of 0.3cm.Assuming bolt length is normally distributed,what is the 99% confidence interval for the true mean length of the bolt?
A) 2.902 to 3.098
B) 2.884 to 3.117
C) 2.864 to 3.136
D) 2.228 to 3.772
E) 2.902 to 3.772
Correct Answer:
Verified
Correct Answer:
Verified
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