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A fair coin is tossed three times and the RV X equals the total number of...

A fair coin is tossed three times and the RV X equals the total number of heads. Find and sketch the pdf, fX (x), and the PDF FX (x).

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Consider the simple experiment of tossing a coin three times. Let X = number of times the coin comes up heads. There are 8 possible elementary events and the corresponding values for X are:


Graphically,

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