# Question: The average income in the District of Columbia in 2013

The average income in the District of Columbia in 2013 was $76,000 per person per year, and that was larger than the average for any state. Suppose the standard deviation is $35,000 and the distribution is right-skewed. Suppose we take a random sample of 100 residents of D.C.

a. What value should we expect for the sample mean? Why?

b. What is the standard error for the sample mean?

a. What value should we expect for the sample mean? Why?

b. What is the standard error for the sample mean?

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