Consider the following results for two samples randomly taken from two populations. 
a.Determine the degrees of freedom for the t distribution.
b.Develop a 95% confidence interval for the difference between the two population means.
c.Is there conclusive evidence that one population has a larger mean? Explain.
Definitions:
Disposable Income
Money left for savings and expenditures in households after paying income taxes.
Disposable Income
This refers to the amount of money that households have available for spending and saving after income taxes have been accounted for.
Disposable Income
The total funds available for spending and saving by households after subtracting income taxes.
Savings
Money set aside from personal income for future use, often placed in secure accounts or investments for growth or as a safeguard.
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