A coin is biased so that when flipped it lands heads 75% of the time and lands tails 25% of the time. Flip this coin 8 times. What is the probability. (hint:binomial probability)
a) The coin lands tails 3 times?
b) The coin lands tails at least once?
c) If you flipped the coin 1000 times, what is the expected number of tails