SCENARIO 14-19 The marketing manager for a nationally franchised lawn service company would like to study the characteristics that differentiate home owners who do and do not have a lawn service.A random sample of 30 home owners located in a suburban area near a large city was selected; 11 did not have a lawn service (code 0)and 19 had a lawn service (code 1).Additional information available concerning these 30 home owners includes family income (Income, in thousands of dollars)and lawn size (Lawn Size, in thousands of square feet). The PHStat output is given below: 
-Referring to Scenario 14-19, what are the degrees of freedom for the chi-square distribution when testing whether the model is a good-fitting model?
Definitions:
Annual Interest Tax Shield
The reduction in income taxes a company achieves through deductible interest expenses.
Coupon Rate
The annual interest rate paid by a bond, expressed as a percentage of the bond's face value.
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