Probability that at least one alterations is discovered

Reference no: EM13130088

Assume that in the 2500 business accunts of a bank, 125 have been fraudulently altered. The alterations are sufficiently subtle that only a detailed audit can uncover them. Fifty business accounts are chosen at random for detailed auditing.

A) What is the probability that at least one of the alterations is discovered?
B) find the expected value and variance of the number of altered accounts discovered during the audit.

Reference no: EM13130088

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