As in Exercise 5, a process to make dental floss produces spools with a desired mean length
Question:
As in Exercise 5, a process to make dental floss produces spools with a desired mean length of 91.4 m (100 yds). The historical standard deviation is 1 cm (0.01 m). If samples of size 5 are taken and measured,
a) What is the center line for the R chart?
b) What is the standard deviation of the sample range?
c) How large (or small) would the sample range have to be to fall outside the 3s limit?
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a The centerline for the R chart is Note that d 2 is obtained from the table of c...View the full answer
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Related Book For 
Business Statistics
ISBN: 9780321925831
3rd Edition
Authors: Norean Sharpe, Richard Veaux, Paul Velleman
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