An IRS agent receives a batch of 18 tax returns that were flagged by computer for possible

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An IRS agent receives a batch of 18 tax returns that were flagged by computer for possible tax evasions. Suppose, unknown to the agent, 7 of these returns have illegal deductions and the other 11 are in good standing. If the agent randomly selects 4 of these returns for audit, what is the probability that:
(a) None of the returns that contain illegal deductions are selected?
(b) At least 2 have illegal deductions?
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Statistics Principles And Methods

ISBN: 9780470904114

7th Edition

Authors: Richard A. Johnson, Gouri K. Bhattacharyya

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