Question

A certain blood test accurately indicates the presence of
a disease 9292% of the time when the disease is actually
present. The test indicates the presence of the disease
0.30.3% of the time when the disease is not present. If 11%
of the population has the disease, what percentage
of the total population will receive a false positive receive a false positive?

Answer 1

As shown in the tree diagram

the population which receives false positive = 0.89 * 0.003

                                                                 =0.00267