Question

A coin is biased such that it results in 2 heads out of every 3 coin flips, on average. Which statement is true?. . A.)The theoretical probability of getting heads from an unbiased coin is about 66%.. . B.)The sequence HTHTTHTTT is valid for the biased coin.. . C.)The biased coin has about a 33% probability of displaying tails.. . D.)The sequence HTTHTHTHT is valid for the biased coin.. *please help*

Answer 1

The theoretical tail-head probability in flipping an unbiased coin is equal to 50%-50%. Given that 2 heads out of the 3 coin flips, only 1 flips towards tail. This is 1/3 or 33% of the events. Thus, the answer to the question above is letter C.