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A biased coin is flipped 9 times. If the probability is 14 that it will land...

A biased coin is flipped 9 times. If the probability is 14 that it will land on heads on any toss. Calculate: This is a binomial probability question

i) The probability that it will land heads at least 4 times.
ii) The probability that it will land tails at most 2 times.
iii) The probability that it will land on heads exactly 5 times.

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