In 2000, the average charge of tax preparation was $95 . Assuming a normal distribution and a standard deviation of $10, use the approximate areas beneath the normal curve, as discussed in this section, to answer : What proportion of tax preparation fees were between $80 and $90?


0.2417

Business

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What will be an ideal response?

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a. Completeness. b. Existence. c. Authorization. d. Classification.

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Business