Multiple Choice
In a manufacturing process,we are interested in measuring the average length of a certain type of bolt.Past data indicates that the lengths are normally distributed with standard deviation 0.25cm.How many bolts should be sampled in order to make us 95% confident that the sample mean bolt length is within 0.02cm of the true mean bolt length?
A) 25
B) 49
C) 423
D) 601
E) 1225
Correct Answer:
Verified
Correct Answer:
Verified
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