Question

suppose you are conducting an experiment by tossing two coins simultaneously. You define a random variable X as the number of tails you get in each trial of the experiment.What is the expected value of X?
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Answer 1

If two coins are tossed simultaneously then the possible outcomes will be HH , HT , TH and TT

Hence, The probability of getting tail in each trial of the experiment (X) is 3/4

I am not sure tho , I hope someone else helps too