Score: 0 of 1 pt 10 of 16 (8 complete) HW Score: 50%, 8 of 161 4.5.27 i Question

Question

Score: 0 of 1 pt 10 of 16 (8 complete) HW Score: 50%, 8 of 161 4.5.27 i Question Help Identical twins come from a single egg that split into two embryos, and fraternal twins are from separate fertilized eggs. Also, identical twins must be of the same sex and the sexes are equally likely, and sexes of fraternal twins are equally likely. If a pregnant woman is told that she will give birth to fraternal twins, what is the probability that she will have one child of each sex? Use the data table below to find the probability Sexes of Twins boy/boy boy/girl girl/boy girligirl Identical Twins Fraternal Twins The probability is Type an integer or a simplified fraction) Enter your answer in the answer box and then click Check Answer Clear Al se (MAT P All parts showing 12018

Explanation / Answer

Prob(one child of each sex | fraternal birth)= Prob( boy/girl or girl/boy | fraternal birth)

=(number of boy/girl in fraternal+number of girl/boy in fraternal)/ total fraternal=(2+2)/10=4/10=2/5=0.4

Sexes of twins boy/boy boy/girl gril/boy girl/girl Total Identical 3 0 0 3 6 Fraternal 3 2 2 3 10 Total 6 2 2 6 16

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