self study - Probability of having 2 girls and probability of having …
Aug 18, 2017 · In this question the general formula P(A|B) = P(A ∩ B)/P(B) is used. I understand through intuition why the answer should be 1/3.
Expected number of ratio of girls vs boys birth
Apr 16, 2014 · NumberOfChilden Probability Girls Boys 1 0.5 1 0 2 0.25 1 1 2 0.25 0 2 In this case the total expected children is more easily calculated. Expected girls from one …
Combinatorics - Arranging boys/girls - Cross Validated
Nov 29, 2020 · part (b) - the chances of a girls stand next to a boy is 1. the chances of a boy to stand next to a girl is 1 minus the chance not to stand next to a girl .the answer is 1 - (answer …
How to resolve the ambiguity in the Boy or Girl paradox?
Jul 4, 2023 · The net effect is that even if I don't know which one is definitely a boy, the other child can only be a girl or a boy and that is always and only a 1/2 probability (ignoring any biological …
probability - What is the expected number of children until having …
Apr 1, 2018 · $\begingroup$ That can't be right, and you can see that by noting that the MINIMUM number of children is 2. If the expected number of children = the minimum number of children, …
combinatorics - All combinations for a King and Queen (coed) 2's ...
Dec 10, 2020 · Ok so I have N girls and N guys. I need to create a 2's beach volleyball coed tournament (also known as King and Queen style). I want a list (like Joe and Jill versus Donald …
Learning probability bad reasoning. Conditional and unconditional ...
(Source: Minka.) My neighbor has two children. Assuming that the gender of a child is like a coin flip, it is most likely, a priori, that my neighbor has one boy and one girl, with probability 1/2. …
what is the difference between a two-sample t-test and a paired t …
May 16, 2021 · While I was glancing at hypothesis tests, I saw paired and two-sample t-test but couldn't understand the difference. For the explanation of these two tests, I saw the following …
Hypothesis testing: Fisher's exact test and Binomial test
Feb 9, 2022 · The result obtained with the Fisher's exact test ("no significant difference between the proportion of girls and boys who finds that the cake tastes good") seems to contradict the …
normal distribution - What is the probability that a girl is taller ...
"Given that boys' heights are distributed normally $\mathcal{N}(68$ inches, $4.5$ inches$)$ and girls are distributed $\mathcal{N}(62$ inches, $3.2$ inches$)$, what is the probability that a girl …