Find the probability of the given event.

Question

An unbiased coin is tossed five times. Find the probability of the given event. (Round your answer to four decimal places.)
The coin lands heads more than once.

Answer 1

This is easy. Find the probability of 5 tosses of a fair coin landing Heads only once, or no times.

The answer will be 1 minus the sum of those two possibilities.

P(0 H) = 1/2⁵ = 1/32

P(1 H) = 5(1/2)⁵ = 5/32

sum is 6/32 = 3/16

therefore P(more than 1 H in 5 tosses) = 1 - 3/16 = 13/16