Question

Dottie’s Tax Service specializes in federal tax returns for professional clients, such as physicians, dentists, accountants, and lawyers. A recent audit by the IRS of the returns she prepared indicated that an error was made on 7% of the returns she prepared last year.
Assuming this rate continues into this year and she prepares 80 returns, what is the probability that she makes errors on:
a. More than six returns?
b. At least six returns?
c. Exactly six returns?



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  • CreatedDecember 10, 2014
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