2. Consider independent fair coin tosses: P(X; = 1) = P(Xį = 0) = 12. Let Ăn = ½/2 Σï=₁ Xį be the sample mean of first n coin tosses. n (a) What is the E[X100]? (b) What can you say about the probability that the sample mean X100 lies between 40 and 60?

A First Course in Probability (10th Edition)
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2. Consider independent fair coin tosses: P(X; = 1) = P(Xį = 0) = 2. Let
X₁ = 1/2₁ X₁ be the sample mean of first n coin tosses.
n
(a) What is the E[X100]?
(b) What can you say about the probability that the sample mean X100 lies
between 40 and 60?
Transcribed Image Text:2. Consider independent fair coin tosses: P(X; = 1) = P(Xį = 0) = 2. Let X₁ = 1/2₁ X₁ be the sample mean of first n coin tosses. n (a) What is the E[X100]? (b) What can you say about the probability that the sample mean X100 lies between 40 and 60?
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