The following information gives the number of days absent from work for a population of 5 workers at a small factory.
a.Find the mean and the standard deviation for the population.
b.Samples of size 2 will be drawn from the population. Use the answers in part a to calculate the expected value and the standard deviation of the sampling distribution of the sample mean.
c.Find all the samples of 2 workers that can be extracted from this population. Choose the samples without replacement.
d.Compute the sample mean 
for each of the samples in Part c.
Correct Answer:
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b.5; 1.5
c.AB, AC, ...
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