The Penn Oil Company wished to verify the viscosity of its premium 30-weight oil. A simple random

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The Penn Oil Company wished to verify the viscosity of its premium 30-weight oil. A simple random sample of specimens taken from automobiles running at normal temperatures was obtained. The viscosities observed were as follows:

Determine if the median viscosity at normal running temperatures is equal to 30 as advertised for Penn€™s premium 30-weight oil. (Use Î± = 0.05.)

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Business Statistics A Decision Making Approach

ISBN: 9780133021844

9th Edition

Authors: David F. Groebner, Patrick W. Shannon, Phillip C. Fry

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Question Posted: Dec 02, 2015 02:59 AM

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The Penn Oil Company wished to verify the viscosity of its premium 30-weight oil. A simple random

Question:

25 24 2 3525 25 35 38 32 36 35 29 3 2728 27 3 32 30 30

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Since we are interested in differences both above and below 30 this should ...View the full answer

Business Statistics A Decision Making Approach

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