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  1. 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 …

  2. 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 …

  3. 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 …

  4. 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

  5. Expected number of ratio of girls vs boys birth - Cross Validated

    Apr 16, 2014 · Thanks to the answers I now understand why the ratio would be 1:1, which originally sounds counter intuitive to me. One of the reason for my disbelief and confusion is …

  6. 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 …

  7. 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 …

  8. 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 …

  9. 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 …

  10. 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 …