Homework Answers
Solution:
a - 1 ) The population is the 10,900 respondents to the American Time Use Survey.
option : - D
a -2 ) The population distribution describes the minutes of sleep per night for the individuals in this population. This distribution is Normal with mean 529.9 minutes and standard deviation 135.6 minutes.
option : - C
b ) The sampling distribution describes the distribution of the average sleep time for 100 randomly selected individuals from this population. This distribution is Normal with mean 529.9 minutes and standard deviation 13.56 minutes.
option : - B
.
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