Introduction to Statistical Quality Control
7th Edition
ISBN: 9781118146811
Author: Montgomery, Douglas C.
Publisher: John Wiley & Sons Inc
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Textbook Question
Chapter 4, Problem 27E
An experiment was conducted to investigate the filling capability of packaging equipment at a winery in Newberg, Oregon. Twenty bottles of Pinot Gris were randomly selected and the fill volume (in ml) measured. Assume that fill volume has a
- (a) Do the data support the claim that the standard deviation of fill volume is less than 1 ml? Use α = 0.05.
- (b) Find a 95% two-sided confidence interval on the standard deviation of fill volume.
- (c) Does it seem reasonable to assume that fill volume has a normal distribution?
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Chapter 4 Solutions
Introduction to Statistical Quality Control
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