1.17 A study of the effects of smoking on sleep pat- terns is conducted. The measure observed is the time, in minutes, t
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1.17 A study of the effects of smoking on sleep pat- terns is conducted. The measure observed is the time, in minutes, t
1.17 A study of the effects of smoking on sleep pat- terns is conducted. The measure observed is the time, in minutes, that it takes to fall asleep. These data are obtained: Smokers: 69.3 56.0 22.1 22.1 47.6 53.2 48.1 52.7 34.4 60.243.8 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 (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.
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