If the probability of the birth of a boy is 0.52. If a family has 4 children.
Find the probability that
a) 3 girls and 1 boy
b) 2 girls and 2 boys
c) 2 girls and 2 boys in which the youngest is a boy
Give steps and answers correct to 3 decimal places
Question of Probability about boy and girl
2008-10-23 5:10 am
回答 (2)
2008-10-23 5:52 am
✔ 最佳答案
Explanation as follows:圖片參考：http://i238.photobucket.com/albums/ff245/chocolate328154/Maths529.jpg?t=1224683510
參考: My Maths Knowledge
2008-10-23 5:53 am
a) 4*(0.52)*(0.48^3) = 0.230
b) 6*(0.52^2)*(0.48^2) = 0.374
c) 3*(0.52)*(0.48^2)*(0.52) = 0.187
b) 6*(0.52^2)*(0.48^2) = 0.374
c) 3*(0.52)*(0.48^2)*(0.52) = 0.187
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