Based off a regression analysis,the following table provides the findings from a survey on how satisfied customers are from their existing DVD players (X12).

Model Summary
Model	R	R Square	Adjusted R Square	Std. Error of the Estimate
1	.915a	.836	.830	.800

ANOVAa
Model	Sum of Squares	df	Mean Square	F	Sig.
1	Regression	624.670	8	78.084	122.040	.000b
Residual	122.205	191	.640
Total	746.875	199
a. Dependent Variable: X12 How satisfied are you with your existing DVD player?
b. Predictors: (Constant), X17 Are you price conscious?, X10 Do you believe you need a DVD player? X13 What is your highest level of education?, X8 -- I seldom look for the lowest prices when I shop, X9 -- I like to try new and different things, X15 total annual household income before taxes, X7 -- Coupons are a good way to save money, X16 Are you an early adopter or innovator?

Coefficientsa
Model	Unstandardized Coefficients	Standardized Coefficients	t	Sig.
B	Std. Error	Beta
	(Constant)	.476	1.378		.345	.730
X7 -- Coupons are a good way to save money	-.266	.186	-.117	-1.430	.154
X8 -- I seldom look for the lowest prices when I shop	-.045	.157	-.023	-.284	.776
X9 -- I like to try new and different things	-.132	.048	-.105	-2.717	.007
X10 Do you believe you need a DVD player?	-.050	.051	-.040	-.970	.333
X13 What is your highest level of education?	.368	.308	.093	1.192	.235
X15 total annual household income before taxes	.343	.062	.253	5.496	.000
X16 Are you an early adopter or innovator?	2.273	.319	.584	7.135	.000
X17 Are you price conscious?	1.010	.153	.260	6.617	.000

Answer the following questions:

a) Write down the regression model b) How good the overall model is?

c) Using information from the table, compare the effects of X7 and X9 on X12. Provide justifications.

d)Using information from the table, compare the effects of X10 and X16 on X12. Provide justifications.

e)Using information from the table, compare the effects of X15, X16, and X17 on X12. Provide justifications.