Homework #2 – Due 2/10/09
Chapter 4
1.
ColaCo has a target of 16.00 ounces of liquid for each of their cans of soda.
The
current process is producing cans of soda with a mean of 16.03 ounces and a standard
deviation of .03 ounces.
What is the process capability if the upper tolerance limit is 16.1
and the lower tolerance limit is 15.9 ounces assuming a 99.7% quality level is required
(+/ 3 standard deviations)?
Is the process capable?
2.
ColaCo has now worked to improve their manufacturing process.
The improved
process is producing cans of soda with a mean of 16.00 ounces and a standard deviation
of .02 ounces.
What is the process capability if the upper tolerance limit is 16.1 and the
lower tolerance limit is 15.9 ounces assuming a 99.7% quality level is required?
Is the
process capable?
3.
ColaCo now wants to have a higher quality standard than before.
They now require 6
sigma quality (+/ 6 standard deviations).
What is the process capability of the improved
process given the higher quality standard?
Is the process capable?
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LensLabs produces contact lenses.
The company has randomly sampled lenses while
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 Spring '08
 Favre
 Standard Deviation, Lower Tolerance Limit, upper tolerance limit, Day Day Day Day Day Day Day

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