Fred decided to study the number of exemptions claimed on personal tax returns he prepared for 2018.

Question:

Fred decided to study the number of exemptions claimed on personal tax returns he prepared for 2018. The data are summarized in the following table.

Exemptions Percent
1 . . . . . . . . . . . . . . . 20
2 . . . . . . . . . . . . . . . 50
3 . . . . . . . . . . . . . . . 20
4 . . . . . . . . . . . . . . . 10

a. What is the mean number of exemptions per return?

b. What is the variance of the number of exemptions per return?

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Statistical Techniques In Business And Economics

ISBN: 9781260239478

18th Edition

Authors: Douglas Lind, William Marchal, Samuel Wathen

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Question Posted: Dec 07, 2020 01:47 AM

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Fred decided to study the number of exemptions claimed on personal tax returns he prepared for 2018.

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a To find the mean number of exemptions per return we can use the formula for th...View the full answer

Statistical Techniques In Business And Economics

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