?The outside diameter of a manufactured part must be 1.3825 inches, according to
Chapter 10, Problem 4(choose chapter or problem)
The outside diameter of a manufactured part must be 1.3825 inches, according to customer specifications. The data shown represent a random sample of ten parts. Use a 95% confidence interval to judge whether the part has been manufactured to specifications.
Note: A normal probability plot and boxplot indicate that the data come from a population that is normally distributed with no outliers.
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