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A machine that produces control arms for a vehicle gas pedal generates pedals that have a length with standard deviation of 0.08 cm. Thirty pedals
- A machine that produces control arms for a vehicle gas pedal generates pedals that have a length with standard deviation of 0.08 cm. Thirty pedals are tested to see if their lengths are acceptable. The sample has a mean of 18.2 cm. What would be the acceptable range of lengths for a 95% confidence level for the mean length?
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