Reference no: EM131111771
Many variables influence the sales of existing single family homes. One of these is the interest rate charged for mortgage. Loans. The table below gives the total number of existing single family homes sold annually, y, and the average annual conventional mortgage interest rate x, for 1982 - 1997. A STATISTIX printout of the simple linear regression is provided on page 525.
a. Plot the data points on graph paper.
b. Find the least squares line relating y to x on the printout. Plot the line on your graph from part a to see if the line appears to model the relationship between y and x.
c. Do the data provide sufficient evidence to indicate that mortgage interest rates contribute information for the prediction of annual sales of existing single family homes? Use α = .05.
d. Locate r2 and interpret is value.
e. A 95% confidence interval for the mean annual number of existing single-family homes sold when the average annual mortgage interest rate is 8.0% is shown next to "Lower/ Upper Fitted Bound" on the printout. Interpret this interval.
f. A 95% prediction interval for the annual number of existing single-family homes sold when the average annual mortgage interest rate is 8.0% is shown next to"Lower1Upper Predicted Bound" on the printout. Interpret this interval
g. Explain why the widths of the intervals found in parts e and f differ.
|
Which one do you think would work best for you
: What systems does your organization utilize, either as a whole or per department? Is this solution effective? Why or why not? Is there a solution that would be more effective? If not, explain why.
|
|
How does the exception differ from usual requirements
: How does the exception differ from usual requirements for probable cause - Use the internet or your library to locate additional information about Terry vs. Ohio.
|
|
The simple linear regression of sweetness index
: Refer to the simple linear regression of sweetness index y and amount of pectin x for n = 24 orange juice samples, Exercise 9.14 (p. 484).A 90% confidence interval for the mean sweetness index, E(y), for each value of x is shown on the SPSS spread..
|
|
Contrast the role the greenhouse effect plays in atmospheres
: Examine the figures below. Contrast the role the greenhouse effect plays in the atmospheres of (a) the Moon, (b) Earth, and (c) Venus.
|
|
Influence the sales of existing single family home
: Many variables influence the sales of existing single family homes. One of these is the interest rate charged for mortgage. Loans. The table below gives the total number of existing single family homes sold annually, y, and the average annual conv..
|
|
Result of planning and setting aside funds
: As result of planning and setting aside funds to repay debt, substantial sums may be accumulated in accounts at financial institutions and in long term investments. This subjects the government to which of the following types of risk?
|
|
Compare the basic characteristics of eurobonds and foreign
: Compare the basic characteristics of Eurobonds and foreign bonds.
|
|
Why we see a seasonal difference in cotwo concentration
: Examine the graph below. In your own words, describe why we see a seasonal difference in CO2 concentration in the atmosphere.
|
|
What is the current yield for a bond
: What is the current yield for a bond? How are bond prices quoted? How are bonds rated, and why?
|