15. Incorrect.
The answer is false not true. The probability of drawing neither an engineer with
4 years' experience nor an engineer from India
can be denoted by P (4' ∩ India').
However, P (4' ∩ India') = P (4 U India)'. Accordingly,
P(4 U
India)' = 1 - P(4 U India) = 1 - [P(4) + P(India) - P(4 ∩ India) ]