Yes.
In a lot of 10 washing machines ,4 are defective .If one is selected at random ,what are the 2 complementary events for this experiment and what are their probabilities.
Attempt:
probability of selecting a defective machine-4/10
probability of selecting a non-defective machine6/10
1-4/10=6/10
1-6/10=4/10
Is my answer correct?