Question 266610
Exercise 7.2 # 7.30 
According to the U.S. Bureau of Labor Statistics publication News, self-employed persons with home-based businesses work a mean of 23 hours per week at home with a standard deviation of 10 hours. 
a. Identify the population and variable
Population: All US employed persons with home-based businesses
Variable: A random individual from that population.
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b. For samples of size 100, find the mean and standard deviation of all possible sample mean hours worked per week at home.
Mean of the sample means: 23 hrs
Standard deviation of the sample means: 10/sqrt(100) = 1
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c. Repeat part (b) for samples of size 1000
I'll leave that to you.
Cheers,
Stan H.