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 …
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 …
probability - What is the expected number of children until having …
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 …
self study - Probability of having 2 girls and probability of having …
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 …
probability - What is the expected number of children until having …
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 …
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 …
what is the difference between a two-sample t-test and a paired t …
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 …
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 …