A bag of 120 fair coins is dumped onto a table. What is the probability that the number of tails is between 50 and 70 inclusively?
Let X denotes the number of tails observed while tossing 120 fair coins.
X ~ Binomial(n = 120, p = 0.5)
The probability mass function of X is
Now,
The probability that the number of tails is between 50 and 70 inclusively
A bag of 120 fair coins is dumped onto a table. What is the probability that...
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