Question: May I have steps to understand this question please? 22. Assume identical twins are always of the same sex, equally likely boys or girls. Assume

May I have steps to understand this question please?

22. Assume identical twins are always of the same sex, equally likely boys or girls. Assume that for fraternal twins the firstborn is equally likely to be a boy or a girl, and so is the secondborn, independently of the first. Assume that proportion p of twins are identical and proportion q = 1 -p fraternal. Find formulae in terms of p for the following probabilities for twins: (a) P(both boys) (b) P(firstborn boy and secondborn girl) (c) P(secondborn girl | firstborn boy) (d) P(secondborn girl | firstborn girl) Answer: + + 19N NN AN AN

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