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Name: Approximately one-third of all human twins are identical (one-egg) and
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Description: Approximately one-third of all human twins are identical (one-egg) and two thirds are fraternal (two-egg) twins. Identical twins are necessarily the same sex, with female and male being equally likely. Among fraternal twins, approximately one-fourth

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Approximately one-third of all human twins are identical (one-egg) and two thirds are fraternal (two-egg) twins. Identical twins are necessarily the same sex, with female and male being equally likely. Among fraternal twins, approximately one-fourth are both female, one-fourth are both male, and half are one female and one male. Finally, among all births in the
United States, approximately 15 in 1000 are twin births.

A = {a U.S. birth results in twin females}

B = {a U.S. birth results in identical twins}

C = {a U.S. birth results in twins}

Find P(A ∩ C).
Compare P(A ∩ C) with P(A)*P(C)
Is the event pairwise independent?

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