Question

95% passed test I, 90% passed test II, 85% passed test III, what is the probability of passing all 3 tests

Answer 1

When calculating the probability of three consecutive events, we multiply the probabilities:

The chance of passing all 3 tests is then: 0.95 x 0.90 x 0.85 = 0.726,
approximately.

Answer 2

Add all them together and divide by 3