A study of the effects of smoking on sleep patterns is conducted. The measure observed is the
Question:
A study of the effects of smoking on sleep patterns is conducted. The measure observed is the time in minutes that it takes to fall asleep. These data are obtained:
(a) Find the sample mean for each group.
(b) Find the sample standard deviation for each group.
(c) Make a dot plot of the data sets A and B on the same line.
(d) Comment on what kind of impact smoking appears to have on the time required to fall asleep.
Transcribed Image Text:
Smokers: 69.3 56.0 22.1 47.6 53.2 48.1 52.7 34.4 60.2 43.8 23.2 13.8 Nonsmokers: 28.6 25.1 26.4 34.9 29.8 28.4 38.5 30.2 30.6 31.8 41.6 21.1 36.0 37.9 13.9
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a Xsmokers 4370 and Xnonsmokers 3032 1693 and Sponsmokers 713 b Ssmo...View the full answer
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Related Book For
Probability & Statistics For Engineers & Scientists
ISBN: 9780130415295
7th Edition
Authors: Ronald E. Walpole, Raymond H. Myers, Sharon L. Myers, Keying
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