Assume that we have three coins: The first coin is fair. The second coin is unfair with probability of heads equal to 0.8. The third coin is also unfair with probability of heads equal to 0.3. Consider an experiment involving two successive coin tosses. The result of the first stage of the experiment is determined by the toss of the fair coin. The result of the second stage of the experiment is determined by the toss of a coin, but suppose that the coin that is used depends upon the result of the toss of the fair coin. Specifically, if the toss of the fair coin results in heads, then the second coin is tossed. Otherwise the third coin is tossed. Let H, and T, be the events that ith toss resulted in heads and tails, respectively. Answer the following questions. Calculate P(H,). Are the events H, and H, independent? Justify your answer analytically.

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Assume that we have three coins: The first coin is fair. The second coin is unfair with
probability of heads equal to 0.8. The third coin is also unfair with probability of heads equal
to 0.3. Consider an experiment involving two successive coin tosses. The result of the first stage
of the experiment is determined by the toss of the fair coin. The result of the second stage of
the experiment is determined by the toss of a coin, but suppose that the coin that is used depends
upon the result of the toss of the fair coin. Specifically, if the toss of the fair coin results in
heads, then the second coin is tossed. Otherwise the third coin is tossed.
Let H, and T, be the events that ith toss resulted in heads and tails, respectively. Answer the
following questions.
Calculate P(H,).
Are the events H, and H, independent? Justify your answer analytically.
Transcribed Image Text:Assume that we have three coins: The first coin is fair. The second coin is unfair with probability of heads equal to 0.8. The third coin is also unfair with probability of heads equal to 0.3. Consider an experiment involving two successive coin tosses. The result of the first stage of the experiment is determined by the toss of the fair coin. The result of the second stage of the experiment is determined by the toss of a coin, but suppose that the coin that is used depends upon the result of the toss of the fair coin. Specifically, if the toss of the fair coin results in heads, then the second coin is tossed. Otherwise the third coin is tossed. Let H, and T, be the events that ith toss resulted in heads and tails, respectively. Answer the following questions. Calculate P(H,). Are the events H, and H, independent? Justify your answer analytically.
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