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URGENT!!! PLEASE ANSWER QUICKLY!! Consider 68 independent tosses of a coin with probability of a head...

URGENT!!! PLEASE ANSWER QUICKLY!!

Consider 68 independent tosses of a coin with probability of a head equal to 0.7. Let X and Y be the numbers of heads and of tails, respectively.

Compute the covariance of X and Y .

Round your answer to four decimal digits after the decimal point.

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