It is a striking fact that the first digits of numbers in legitimate records often follow a distribution known as Benford's Law , shown below. First...

Fake records usually have fewer first digits 1, 2, and 3. What is the approximate probability, if Benford's Law holds, that among1234randomly chosen invoices there are no more than678in amounts with first digit 1, 2, or 3? (Round your answer to four decimal places.)