a) 75.4%
b) 613
c) The data for method of preparing the tax return would be a categorical.
Given that: survey shows 782 of 1037 people would most likely file electronically.
a) To estimate the percentage of all taxpayers who file electronically, we say; (782 / 1037) * 100% = 0.754 = 75.4%.
Given that: 50% said they would use professionals,
b) Now to find how many people did it this way, we say;
( 50 / 100) * 1037 = 518.5 = 518 (we are talking about number of person)
c) Apart from hiring accountant or professional for tax preparation, manual preparation can also be done. Also there are other methods like online tax service or software tax programme. So the data for method of preparing the tax return would be a categorical as the observations can be grouped in different tax preparation methodology category.
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