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 …
Sample notation: When to use capital $N$ vs lowercase $n$?
Jan 10, 2024 · In statistics and psychological research, what is denoted by capital N N vs lowercase n n? I work in psychological research and I've seen them used in two ways: Capital …
probability - How many ways can 5 people sit around a table - can ...
Mar 2, 2017 · A probability problem: In how many different ways can 5 people sit around a round table? Is the symmetry of the table important? Answer: If the symmetry of the table is not …
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 …
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, 4 months ago Modified 8 years, 4 months ago
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 that any two people have the same birthday?
Oct 12, 2019 · In Blitzstein's Introduction to Probability, it is stated that the probability that any two people have the same birthday is 1/365. However, isn't this the conditional probability that the …
Understanding intuition of the Two child problem
The information that at least one is a boy, however that has been decided to make that statement, does certainly exclude the probability of two girls. The information about the day is seemingly …