SOLUTION: consider the random variable X to be number of heads obtained on 3 flips of a fair coin.
Write out the probability mass function and the probability distribution function for X.
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Question 1050387: consider the random variable X to be number of heads obtained on 3 flips of a fair coin.
Write out the probability mass function and the probability distribution function for X.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
There are eight possible outcomes
HHH-3
HHT-2
HTH-2
HTT-1
THH-2
THT-1
TTH-1
TTT-0
So then,
The cumulative distribution function is then,
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