Math Question

[Grampa]

The answer is...... vagina.

[akmnstr]

But I don't want to take a stats class. I build houses for a living. I have no practical use for this knowledge. This is just the shit I think about when I'm awake at 3am. And no, I wasn't high.

Is this a valid question:

I ran 100,000 trials and 90,000 came up x and 10,000 came up y. How sure can I be that the ratio of x to y is actually 9:1?

Show you work.


sac

On the other hand, next time this happens, try to think of the sexiest woman you know naked, wank off, and go back to sleep!

[Speedbag]

67% of all statistics are made up on the spot. 

[Rameses]

Okay. So how do you calculate how many trials it takes to get to a 95% confidence level?

sac

You still haven't defined a confidence interval.

Or were you saying to go with the one that I used as an example?

[SacDuc]

You people are not helping. And after all of the well thought out advice and deep knowledge I give to the members of this board I would expect that . . . no . . . wait . . . nevermind. You guys have every right to be complete dicks.

Where the hell is that one rocket scientist dude. He knows this stuff.

sac

[SacDuc]

You still haven't defined a confidence interval.

Or were you saying to go with the one that I used as an example?

Sure let's go with your example for the moment.

sac

[Rameses]

Sure let's go with your example for the moment.

sac

Okay, let's see here...

...ninety-fff...  ....times theee....

mmkayy

...divide by fif....   carry the.....

allllright

...cross reference with th.


Yep.  Zoom was right.  It's 42.

[SacDuc]

I hate you all.


sac

[akmnstr]

You people are not helping. And after all of the well thought out advice and deep knowledge I give to the members of this board I would expect that . . . no . . . wait . . . nevermind. You guys have every right to be complete dicks.

Where the hell is that one rocket scientist dude. He knows this stuff.

sac

SAC I just got my copy of  Zar Biostatistical Analysis off the shelf behind me to look up the exact formulas you need.  The trouble is that my keyboard does not have the math symbols needed to write the formulas but if you look on pages 18 and 31 the formulas are there.  Yup, that should be all ya need to figure this one out.  

It is always better to help a friend with a math problem figure it out for them-self (with a little guidance) than to just give them the answer.  

[akmnstr]

I hate you all.


sac

Well if that is how your going to be, I'm taking my stats book and going home. 

[Rameses]

It is always better to help a friend with a math problem figure it out for them-self (with a little guidance) than to just give them the answer.  

[SacDuc]

Restate the question:

Let's say some tells you that there is a 9:1 chance that when you start a thread on the DMF some douche bag will threadjack it. Assuming it is possible to start an infinite amount of individual threads, how many threads would you have to start before you could say with 95% certainty that there is (or is not) a 9:1 chance that someone will say something douchey?


sac

[El Matador]

Where the hell is that one rocket scientist dude. He knows this stuff.

sac

*Raises hand*

I'm probably not the one you're thinking of but I'm Aerospace Engineering. It would take more energy to explain how your question is intrinsically wrong than it does for me to point and laugh. So there

[ducpainter]

One thread

[SacDuc]

*Raises hand*

I'm probably not the one you're thinking of but I'm Aerospace Engineering. It would take more energy to explain how your question is intrinsically wrong than it does for me to point and laugh. So there

Screw you too!   

I found what I was looking for:
http://talkstats.com/showthread.php?t=12567

sac