2.3-16. Let X equal the number of flips of a fair coin that are required to observe the same face on consecutive flips. a. Find the pmf of X. HINT: Draw a tree diagram. b. Find the moment-generating function of X. c. Use the mgf to find the values of (i) the mean and (ii) the variance of X.

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Q: okay can you also do part b now.

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A: We have given that Mean(µ) = 72.6Standard deviations (σ) = 4.78X ~ N (µ, σ )= N(72.6, 4.78)

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