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Combinations Ordered; Hypergeometric Distribution; Hypergeometric Distr. Function - HP Mathematics II User Manual

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Combinations, ordered
If the order is important you will have to use this routine. The
same elements in different orders will then be to separate
events.
Interface:
RAD
{HOME }
:n k:
Draw k of n
ordered N = n!/(n-k)!
15 3
*.J*%*^**;*i JJ'X^-
t
Ww!''^«^J •&.* •S^^'!'
•••* W*^**^*
1
*
if
i
1
/ . , * > " " . ^
l*« K
si
PRG
^-") -i-
-X •***•
I"
e
&
&
e
The example calculates the number of combinations when
drawing 3 elements from 15 with regard to order.
Hypergeometric distribution
Here the probability of drawing exactly k X'es from a popu-
lation of n when a elements are drawn at a time without re-
placement is calculated. The probability for the X to b e drawn
is p.
3
E w-c
gw-
E:
4. Probability
44

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