
16 Statistical Computing in Nuclear Imaging
the result of only the second roll g (sinc e g by convention is use d to indicate
observable quantity). The value of roll g is the only observable quantity. The
result of roll f is unknown to person B. If no other conditions of the experiment
are specified (see Example 1.9), the numbers obtained in each of the two rolls
are independent, and we will not be able to infer any additional information
about f based on g.
However, the expe riment is modified such that t he person A repeats the
second roll g until the n umber is equal or less than the number obtained in the
first roll f and only the result of the