Question

if the probability of seeing a moose in a day in a certain region of alaska is 0.39, what is the probability of not seeing any moose in a day there?

Answer 1

Any guesses?

Answer 2

The two events 'see a moose in a day' and 'not see a moose in a day' are mutually exclusive.
P(A U B) = P(A) + P(B)
The probability of seeing a moose in a day or not seeing a moose in a day is 1.
Let the probability of not seeing a moose in a day = P(n)
1 = 0.39 + P(n)
P(n) = 1 - 0.39