One of the ways in which the dental floss discussed in Exercise 5 can fail is if

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One of the ways in which the dental floss discussed in Exercise 5 can fail is if it snaps when pulled with a certain tension. Historically, only 2% of the tested floss snaps. Suppose boxes of size 50 are selected at random to be tested.

a) What is the standard deviation for the sample proportion from a box of 50?

b) What are the upper and lower 3σ control limits?

c) How many packages in a box of 50 would have to fail for a process to be declared out of control using the 3σ control limits?

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Business Statistics

ISBN: 9780321925831

3rd Edition

Authors: Norean Sharpe, Richard Veaux, Paul Velleman

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Question Posted: May 15, 2015 07:07 AM

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One of the ways in which the dental floss discussed in Exercise 5 can fail is if

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a The standard deviation for the sample proportion is SE 00...View the full answer

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