A machine produces metal pieces which are cylindrical in shape with an average mean diameter of 14.20 cm if the machine is in good condition. A quality engineer officer evaluates the condition of the machine by using a random sample of 36 runs which resulted to a mean diameter of 14.25 cm with standard deviation of 0.30 cm. Using this information, construct a 95% confidence interval estimate of the true average diameter of the cylindrical metal pieces produced by the machine. Determine the values of the following: Prompts Submitted Answers 36 14.25 0.30 Za/2 1.96 Upper Limit 14.35 Lower Limit 14.15

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