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The manager of a grocery store has taken a random sample of 144 customers. The average length of time it took these 144 customers to check out was 3 minutes. It is known that the standard deviation of the population of checkout times is 1 minute. The 95% confidence interval for the true average checkout time (in minutes) is
Abbreviation
A shortened form of a word or phrase, used to simplify detailed technical instructions or specifications.
Gray Iron
A type of cast iron characterized by its graphitic microstructure, which gives it good machinability and vibration damping properties.
Flask
In manufacturing, often refers to a container or casing used in the process of forming metal castings.
Drag
A force acting opposite to the relative motion of any object moving with respect to a surrounding fluid; it also describes the resistance an object encounters while moving through a fluid (like air or water).
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