# coin tossing

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• Nov 22nd 2010, 08:49 AM
eleahy
coin tossing
find the sample space for
(a)tossing a coin repeatedly until the first head appears . The quantity is the number of tosses before the first head?!?!
(b) two dies are tossed, the quantity of interest is the sum of dots

im completely lost with a but is just= {2,3,4,5,6,7,8,9,10,11,12}???
any help appreciated!!
• Nov 22nd 2010, 08:55 AM
Plato
Quote:

Originally Posted by eleahy
find the sample space for
(a)tossing a coin repeatedly until the first head appears . The quantity is the number of tosses before the first head?!?!

(b) two dies are tossed, the quantity of interest is the sum of dots is just= {2,3,4,5,6,7,8,9,10,11,12}

The part in blue above is correct.

For part (a) the outcome space is the set of non-negative integers: $\{0,1,2,3,\cdots\}$