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Question: The sub-prime mortgage crisis that hit the world economy also impacted the real estate market. Both new and existing home sales were affected. A file titled EHSales contains the number of existing homes sold (in millions) from September of 2007 to September 2008.
a. Construct a line plot for these data.
b. The data file also contains data concerning the median selling price ($thousands). Construct a graph containing the line plot for both the number of sales (tens of thousands) and the median ($thousands) price of these sales for the indicated time period.
c. Describe the relationship between the two line plots constructed in part b.
a pet company has a business objective of expanding its product line beyond its current kidney- and shrimp-based cat
According to the Darvas Box stock trading system, a trader looks at a chart of stock prices over time and identifies box-shaped patterns.- If the sample standard deviation was 12 days, give a 90% confidence interval for the average hold time in days..
construct a contingency table for the relationship between degree of anger and the incidence of heart disease.- Among those with no anger symptoms, what percentage had coronary heart disease?
Using z-scores, a population with m = 37 and s = 6 is standardized so that the new mean is m = 50 and s = 10. How does an individual's z-score in the new distribution compare with his/her z-score in the original population?
She takes a sample of 36 packages, and found that the mean weight is 3.01 pounds, with a standard deviation of .03 pounds. Determine a 95% confidence interval for the population mean.
This problem involves calculating and interpreting the 95% confidence interval for a proportion. While you can use SPSS to determine proportions, you need to calculate the confidence interval by hand.
If you are told a population has a mean of 25 and a variance of 0, what must you conclude? a) Someone has made a mistake. b) There is only one element in the population.
Find the median and the first and third quartiles for the number of CDs owned by young adults. Develop a box plot for the information. Compare the number of CDs owned by the two groups.
Within plus or minus ten dollars of the true mean. The standard deviation is thought to be $500.00 (CTU, 2010) The determination of the sample size must be figured out.
given that sxx 265 syy 172 and sxy 184 what is the value of the linear correlation
Random variable Y has the moment generating function φY (s) = 1/(1 - s). Random variable V has the moment generating function φV (s) = 1/(1-s)4. Y and V are independent. W = Y + V.
If a sample of 25 workers found that the average work week is 48 hours, conduct a hypothesis test to determine if there is significant evidence that the length of the average work week has increased? Use alpha=.05
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