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    The chance of an IRS audit for a tax return with over $25,000 in income is about 2% per year. Suppose that 100 people with tax returns over $25,000 are randomly picked. We are interested in the number of people audited in one year. Use a Poisson distribution to anwer the following questions.

    In words, define the random variable X .List the values that X may take on.Give the distribution of X . X ~ _____(_____,_____)How many are expected to be audited?Find the probability that no one was audited.Find the probability that at least three were audited.

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Source:  OpenStax, Introductory statistics. OpenStax CNX. May 06, 2016 Download for free at http://legacy.cnx.org/content/col11562/1.18
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