There are 13 coins inside a box. Three has two heads and one has two tails and the others are normal. All are equally likely to come up on either side when tossed. Sir Franz randomly draws a coin from the box and without checking the coin, he tosses it two times. If it comes up heads on all two tosses, what is the probability that the coin is a double - headed coin?

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Q: Example 5. Find the coefficient of correlation between the heights of brothers and sisters from the…

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