Question: The mean family income in Wisconsin, according to the 2011 data, is about $77,351, with a standard deviation (for the population) of approximately $59,750. 17.

The mean family income in Wisconsin, according to the 2011 data, is about $77,351, with a standard deviation (for the population) of approximately $59,750.

17. Imagine that you are taking a subsample of 200 state residents. What is the probability that your sample mean is between 71,000 and $77,351 (5 pts)? Try to find a Z-score for $71,000. Then, you can find the probability based on this Z-score using Appendix B.

18. For this same sample size, what is the probability that the sample mean exceeds $85,000 (5 pts)? Try to find a Z-score for $85,000. Then, you can find the probability based on this Z-score using Appendix B.?

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