The Printed Output of Some Computer-Driven Printers Can Be Recognized

Multiple Choice

The printed output of some computer-driven printers can be recognized by forensic analysts. The "Acme Model 200" printer was manufactured using two different inking mechanisms, one of which yields a "Type A" micropattern of ink spray around its characters. Of all Acme Model 200 printers, 70% produce this Type A micropattern, which is also characteristic of some models of other printers. Forensic analysts at a crime lab have been examining a kidnap ransom note which clearly exhibits the Type A micropattern.

A) Was printed on an Acme Model 200 printer, with a probability of 70%
B) Was printed on an Acme Model 200 printer, with a probability of 30%
C) Was not printed on an Acme Model 200 printer, with a probability of 70%
D) Was not printed on an Acme Model 200 printer, with a probability of 30%
E) May have been printed on an Acme Model 200 printer, but the probability cannot be estimated