A random telephone survey of 1,021 adults (18 aged and older) was conducted by Opinion Research Corporation on behalf of CompleteTax, an online tax preparation and e-filing service. The survey results showed that 684 of those surveyed planned to file their taxes electronically.

a. Develop a descriptive statistic that can be used to estimate the percentage of all taxpayers who file electronically.

% (to nearest whole number)

b. The survey reported that the most frequently used method for preparing the tax return was to hire an accountant or professional tax preparer. If 60% of the people surveyed had their tax return prepared this way, how many people used an accountant or professional tax preparer?

(to nearest whole number)