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susumandrai
04-08-2012, 05:23 PM
Given two sets of 50 coin tosses, how would you tell if one set is fake or real?

Please tell me a method. I remember seeing a formula once, but unfortunately i have forgotten :(

tkhunny
04-08-2012, 06:13 PM
If you tossed the coins, then your set of tosses is real.

What's the question?

susumandrai
04-08-2012, 09:05 PM
If you tossed the coins, then your set of tosses is real.

What's the question?

I mean one set of 50 is tossed and recorded and the other is just written down by thinking in your head.

pka
04-08-2012, 09:12 PM
I mean one set of 50 is tossed and recorded and the other is just written down by thinking in your head.

lookagain
04-09-2012, 11:20 AM
Given two sets of 50 coin tosses,
how would you tell if one set is fake or real?

Please tell me a method. I remember seeing a formula once,
but unfortunately i have forgotten :(

susumandri,

if you really had a serious question regarding this idea, then I would have expected
you to have formulated it such as this:

"Given two sets of 50 coin tosses, one done experimentally and the other 50 chosen
off the top of your head, which set(s) of coin tosses would be indicative of a fair coin?"

If a set of 50 coin tosses (actual or conjured up) would deviate "too much" **
from an average of 25 heads and 25 tails, then I would state that that
set of 50 tosses indicates that you aren't using a fair coin.

** On average, for a "large number" of tosses of a fair coin, the proportion of
heads to tails will more so even out.

Please type a question as originally posed by an instructor and/or a textbook,
for serious consideration.

susumandrai
04-09-2012, 03:35 PM
susumandri,

if you really had a serious question regarding this idea, then I would have expected
you to have formulated it such as this:

"Given two sets of 50 coin tosses, one done experimentally and the other 50 chosen
off the top of your head, which set(s) of coin tosses would be indicative of a fair coin?"

If a set of 50 coin tosses (actual or conjured up) would deviate "too much" **
from an average of 25 heads and 25 tails, then I would state that that
set of 50 tosses indicates that you aren't using a fair coin.

** On average, for a "large number" of tosses of a fair coin, the proportion of
heads to tails will more so even out.

Please type a question as originally posed by an instructor and/or a textbook,
for serious consideration.

Sorry everyone, the above is what I was really looking for !