Assume that there are two factors influencing the past default behaviour of borrowers; these being the debt to equity ratio and the sales to assets ratio. Based on past default (repayment) experience, the linear probability model is estimated as Zi = 0.5(D/Ei) - 0.25 (S/Ai). Assume that a prospective borrower has a D/E ratio of 0.9 and a sales to assets ratio of 1.5. What is the borrower’s probability of default? (0.5 marks)
Question
Assume that there are two factors influencing the past default behaviour of borrowers; these being the debt to equity ratio and the sales to assets ratio. Based on past default (repayment) experience, the linear probability model is estimated as Zi = 0.5(D/Ei) - 0.25 (S/Ai). Assume that a prospective borrower has a D/E ratio of 0.9 and a sales to assets ratio of 1.5. What is the borrower’s probability of default? (0.5 marks)
Solution
To calculate the borrower's probability of default, we need to substitute the given values into the linear probability model.
The model is given as Zi = 0.5(D/Ei) - 0.25 (S/Ai).
Here, D/Ei is the debt to equity ratio and S/Ai is the sales to assets ratio.
The given D/E ratio is 0.9 and the S/A ratio is 1.5.
Substituting these values into the model, we get:
Zi = 0.5(0.9) - 0.25(1.5) = 0.45 - 0.375 = 0.075
Therefore, the borrower's probability of default is 0.075 or 7.5%.
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