What is the probability that a family with 3 children has:

  1. exactly 1 girl?
  2. 2 girls and 1 boys?

Consider the birth probability of a girl is 48.66% and a boy 51.34%.

Correct answer:

p1 =  38.5 %
p2 =  36.5 %

Step-by-step explanation:

n=3 p=48.66%=10048.66=0.4866 p1=100 (1n)p1(1p)n1=100 (13)0.48661(10.4866)31=30.486610.51342=38.5%
p2=100 (2n)p2(1p)n2=100 (23)0.48662(10.4866)32=30.486620.51341=36.5%

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