Expected number of ratio of girls vs boys birth - Cross Validated
Apr 15, 2014 · Expected girls from one couple$ {}=0.5\cdot1 + 0.25\cdot1 =0.75$ Expected boys from one couple$ {}=0.25\cdot1 + 0.25\cdot2 =0.75$ 1 As I said this works for any reasonable rule that …
How to resolve the ambiguity in the Boy or Girl paradox?
Jul 4, 2023 · 1st 2nd boy girl boy seen boy boy boy seen girl boy 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 …
probability - What is the expected number of children until having the ...
Aug 5, 2023 · A couple decides to keep having children until they have the same number of boys and girls, and then stop. Assume they never have twins, that the "trials" are independent with probability …
self study - Probability of having 2 girls and probability of having at ...
Aug 18, 2017 · Probability of having 2 girls and probability of having at least one girl Ask Question Asked 8 years, 3 months ago Modified 8 years, 3 months ago
Sample notation: When to use capital $N$ vs lowercase $n$?
Jan 10, 2024 · Use standard type for Greek letters, subscripts and superscripts that function as identifiers (i.e., are not variables, as in the subscript “girls” in the example that follows), and …
Hypothesis testing: Fisher's exact test and Binomial test
Feb 9, 2022 · Considering the population of girls with tastes disorders, I do a binomial test with number of success k = 7, number of trials n = 8, and probability of success p = 0.5, to test my null hypothesis …
probability - What is the expected number of children until having at ...
Apr 1, 2018 · Source: (Harvard Statistics 110: see #17, p. 29 of pdf). A couple decides to keep having children until they have at least one boy and at least one girl, and then stop. Assume they never …
ANOVA vs. T-test for two groups - Cross Validated
May 23, 2019 · alternatively, you could inverse the relation and model the independent group variable as a function of the dependent variables. This is especially interesting with the multivariate type of …
what is the difference between a two-sample t-test and a paired t-test
May 16, 2021 · When you use a paired T-test, you are essentially doing a one-sample test, where your one sample consists of the paired differences between outcomes in two groups. If you create a new …
normal distribution - What is the probability that a girl is taller ...
3 "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 chosen …