What is the probability that a family with 7 childrens have:

  1. exactly 6 dívek?
  2. 2 dívky and 5 boys?

Consider the birth probability of a girl is 48.87% and boy 51.13%.

Correct answer:

p1 =  4.9 %
p2 =  17.5 %

Step-by-step explanation:

n=7 p=48.87%=10048.87=0.4887 p1=100 (6n)p6(1p)n6=100 (67)0.48876(10.4887)76=4.9%
p2=100 (2n)p2(1p)n2=100 (27)0.48872(10.4887)72=17.5%

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