**⚠️ Warning: This is a draft ⚠️**

This means it might contain formatting issues, incorrect code, conceptual problems, or other severe issues.

If you want to help to improve and eventually enable this page, please fork RosettaGit's repository and open a merge request on GitHub.

== usage of ''people''==

Why assume that the people choosen are alive? If dead, then "they" aren't people, but corpses. The task clearly states a group of people. However, even if dead, they still had a birthday. -- [[User:Gerard Schildberger|Gerard Schildberger]] ([[User talk:Gerard Schildberger|talk]]) 03:02, 4 November 2013 (UTC)

== years in Algol ==

What does years signify in "%age of years with required common birthdays: 50.71%;" ? --[[User:Walterpachl|Walterpachl]] ([[User talk:Walterpachl|talk]]) 10:36, 4 November 2013 (UTC)

== Meaning of precision ==

I’m not sure what “''Estimating the error in the estimate to help ensure the estimate is accurate to 4 decimal places''” means. My interpretation is that the $\backslash sigma\_\backslash mathrm\{mean\}$ of the estimated frequency is $<1/10000$.

The $\backslash sigma\_\backslash mathrm\{mean\}$ of the distribution of each sample is calculated using the binomial distribution, so it’s is at most $1/2$ (for $p=q=1/2$). We are very near that value. In this case, if we use $\backslash sigma\_\backslash mathrm\{mean\}=\backslash sigma\; /Sqrt(N)$ then the number of samples has to be $N=25000000=10000^2/4$.

Most of the examples use $N=50000$, so they don’t have enough precision. On the other hand, $25000000$ is to much, so I run my example in Racket with only $250000$, that gives a $\backslash sigma$ of only $1/1000$.

I think that the description of the task should ask for a clearer goal. For example: “''Do the final simulation with at least 25000000 samples to help ensure the estimate is accurate to 3 decimal places''.”