Effort to prove that the coin is unfair

Reference no: EM13103115

A coin is unbalanced such that it comes up tails 55% of the time. In an effort to prove that the coin is unfair, an experimenter flips the coin 50 times.

a) What is the probability that the coin comes up tails more than 25 times?

b) What is the probability that the coin comes up tails more than 30 times?

c) What is the probability that the coin comes up tails exactly 25 times?

Reference no: EM13103115

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