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.?

Answer rating: 100% (QA)

Mean 77351 Standard deviation 59750 17 Sample size n 200 To determine the pro... View the full answer