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Mean or Expectation of random variable
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Mean or Expectation of random variable
Last updated at May 29, 2023 by Teachoo
Question 10 Find the mean number of heads in three tosses of a fair coin.Question 10 Find the mean number of heads in three tosses of a fair coin.So the Probability distribution The mean number is given by π=πΈ(π₯)=β2_(π = 1)^πβπ₯πππ = 0 Γ 1/8+"1 Γ" 3/8+ 2 Γ 3/8+ 3 Γ 1/8 = 0 + 3/8+ 6/8+3/8 = 12/8 = 3/2 = 1.5