Question: A company that traditionally made rulers and yardsticks is setting

A company that traditionally made rulers and yardsticks is setting up a manufacturing process to make metersticks. Obviously, accuracy is important for their new product. The company runs a 24-hour production process. Using a calibration set of data they found:
They took a sample of 3 metersticks each hour and recorded the results in the following table.
a) Create an X chart based on the calibration data statistics for these 24 hourly samples.
b) Create an R chart based on the calibration data statistics for these 24 hourly samples.
c) Assuming that the process was in control during the calibration period, is the company’s process for making accurate meter sticks out of control?

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  • CreatedMay 15, 2015
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