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A balanced coin is tossed 3 times, and among the 3 coin tosses, X heads show....

A balanced coin is tossed 3 times, and among the 3 coin tosses, X heads show. Then the same balanced coin is tossed X additional times, and among these X coin tosses, Y heads show.

a. Find the distribution for Y .

b. Find the expected value of Y .

c. Find the variance of Y .

d. Find the standard deviation of Y

Math   Statistics-And-Probability   
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