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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a To find the mean number of exemptions per return we can use the formula for th...View the full answer
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Related Book For
Statistical Techniques In Business And Economics
ISBN: 9781260239478
18th Edition
Authors: Douglas Lind, William Marchal, Samuel Wathen
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