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The Credit Risk Department of a major bank estimates the default rate on loans under $10,000 to be 4%. The bank will make 2400 loans that are under $ 10.000 next month. Answer the following. (If necessary, consult a list of formulas.) (a) Find the mean of p, where p is the proportion of defaults on the 2400 loans under $10,000 to be made next month. X ? (b) Find the standard deviation of p. (c) Compute an approximation for P (p