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The mean family income in Wisconsin, according to the 2011 data, is about $77,531, with a standard deviation (for the population) of approximately $59,750.
A) Imagine that you are taking a subsample of 200 state residents. What is the probability that your sample mean is between $71,000 and $77,531?
B) For this same sample size, what is the probability that the sample mean exceeds $85,000?
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