(a) Use the central limit theorem to determine the probability that if you toss a coin 50 times, you get fewer than 20 heads.
(b) A coin is continuously tossed until the heads come up 20th time. Use the central limit theorem to estimate the probability that more than 50 coin tosses are required to get the 20th head.
(c) Compare your answers from parts (a) and (b). Why are they close but not exactly equal?
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