Does pollution affect amount of sleep? A person living in a polluted region was randomly selected;...
Does pollution affect amount of sleep? A person living in a polluted region was randomly selected; his sleep the night before was 10.2 hours. In the general population, amount of sleep is normally distributed with μ = 8 and σ = 1. This research question was tested using a two-tailed test with a cutoff of 5%.
1. Determine the characteristics of the comparison distribution.
Homework Answers
The comparison distribution is normal distribution with mean = 8
and standard deviation = 
/
= 1/
=
1. Reason: even though Sample Size = n = 1 < 30, Small Sample,
since population Standard Deviation is given, normal distribution
is applicable instead of usual t distribution for small
samples.
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Does pollution affect amount of sleep? A person living in a
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