Question

If 20% of all manually filed returns contain errors, and 0.05% of all electronically filed returns contain errors, how much more likely is a manual filer to make an error than an electronic filer?

a.
40,000 times more likely
b.
4,000 times more likely
c.
400 times more likely
d.
40 times more likely

Answer 1

c. 400 times more likely

Explanation:

Answer 2

ratio = % of manually filed returns that contain errors / % of electronically filed returns that contain errors

ratio = 20% / 0.05% = 20 / 0.05 = 400


Answer: option c. 400 times more likely