The thickness of lens flters that are precision cut by
The thickness of lens flters that are precision cut by laser trimmers at Upton Camera’s main manufacturing operation is carefully monitored. Below are the thickness measurements in millimeters for seven recently produced flters.
a. Use the “1.5 × inter-quartile range” approach to identify any outliers.
b. Compute the mean and the standard deviation for the data and use the “3-standard-deviation” approach to identify any outliers.
c. Calculate the z-score for the value .009.
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