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1)    For borrowers with good credit scores, the mean debt for revolving and installment accounts is $15,015.

Assume the standard deviation is $3,540 and that debt amounts are normally distributed.

a.    What is the probability that the debt for a borrower with good credit is more than $18,000?

b.    What is the probability that the debt for a borrower with good credit is less than $10,000?

c.     What is the probability that the debt for a borrower with good credit is between $12,000 and $18,000?

d.    What is the probability that the debt for a borrower with good credit is no more than $14,000?

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