Question: Can you please help me in understanding binomial distribution using the below example: A coin is biased so that the probability of obtaining a head

Can you please help me in understanding binomial distribution using the below example:

A coin is biased so that the probability of obtaining a head is ⁷/₁₀. The coin is tossed 20 times. a. What is the probability of obtaining exactly 10 heads? b. What is the probability of obtaining more than 5 heads? c. What is the probability of obtaining between 8 and 12 heads inclusively?

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